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why can hydrogen be placed in group 1 and 7

But they hydrogen atoms can also gain one electron similar to halogens. Thus it can lose an electron to achieve a stable configuration like alkali metals and hence can be placed in group 1 … Log in. What does contingent mean in real estate? Also, as its atomic number is 1,it is first in the periodic table. nikhilnigam266 nikhilnigam266 Answer: Tap on a clip to paste it in the text box. Your IP: 217.182.169.93 Helium .. Hydrogen can become both a cation and an anion. In the coming lines we will discuss why hydrogen can not be placed in a particular group in the periodic table. Hydrogen can be placed in both group 1 and group 17 because its electronic configuration is similar to both the groups. Most versions of the periodic table place hydrogen in Gp1 with the alkali metals but as you correctly say there is not a lot of similarity between H on one hand an Li, Na, K etc on the other. Group 1 Group 2 Group 3 Group 4 Group 5 Group 6 Group 7   H   Li Be B C N O F   Na Mg Al Si P S Cl  (a) Hydrogen was placed at the top of Group 1 in the early version of the periodic table. Relevance. Hydrogen can be in both group 1 and group 7 due to it's valence shell. You may need to download version 2.0 now from the Chrome Web Store. myfedex18. But some, like the one I was given, also show Hydrogen in the 7th group, to left of Helium. If you are at an office or shared network, you can ask the network administrator to run a scan across the network looking for misconfigured or infected devices. Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. Hydrogen can be placed in group 1 and group 7 of mendeleev's periodic table why - Science - Periodic Classification of Elements Because it has 1 electron, it can either accept one (like a In others, you might find hydrogen placed independently of any group; somewhere at the top of the Periodic Table. Explanation : H (Z=1): K 1. Hydrogen is placed in group I of the modern periodic table due to following reasons:- ( 1 ) It shows outer electronic configuration similar to group I elements (i.e. Why don't libraries smell like bookstores? Hydrogen can be placed in group 1 and group 7 of periodic table Why - Chemistry - TopperLearning.com | 5pvnskvnn How old was queen elizabeth 2 when she became queen? What date do new members of congress take office? Give a reason why hydrogen can be placed in group 1 [1A] and group 17 [VIIA] of the periodic table. Hydrogen can be in both group 1 and group 7 due to it's valence shell. Chlorine, bromine and iodine are all halogens. 1 Answer. A conceptual question: In Chemistry, Hydrogen has always been regarded as an "outlier" of sorts--exhibiting the characteristics of family 1 elements yet only have one valence electron filling the 1s orbital. In Mendeleev"s Periodic table, the position of hydrogen was not clear. Name two elements whose properties were correctly predicted by Mend Why can hydrogen be placed in both group 1 & 7 of the periodic table? 1 decade ago. Astatine should react very slowly with hydrogen, even when heated. Hydrogen only needs 2 (or 0) electrons to be stable. Please enable Cookies and reload the page. Why hydrogen can be in group 1 and also can be in group 7. Li (Z=3): K 2, L 1 Many gases can be liquefied by cooling, producing liquids such as liquid oxygen, liquid nitrogen, liquid hydrogen and liquid helium. They react with metals to form metal halides, and with hydrogen to form acidic hydrogen halides. 1. Thus it can lose an electron to achieve a stable configuration like alkali metals and hence can be placed in group 1 … 10 years ago. Review. 6) Its electronic configuration is 1s 1. Give the general group characteristic applied to hydrogen with respect to similarity in properties of hydrogen with alkali metals of group 1 [IA]. Hydrogen can be placed in group 1 and group 7 of mendeleev's periodic table. Hydrogen forms both positive ions like alkali metals (group 1) and negative ions like halogens (group 7). Use the information to predict the reaction of astatine with hydrogen. Explain why group 1 elements often form compounds with elements in group 17. Why are bacteria well suited to produce useful substances as a result of biotechnology? in column 1. it only needs one electron ot complete shell like the halogen in group 7. Carbon dioxide, for example, can only be liquified at pressures above 5.1 atm. Properties of Hydrogen Hydrogen is a nonmetal and is placed above group in the periodic table because it has ns 1 electron configuration like the alkali metals. From the top to the bottom of group 1, the elements have heavier, more reactive atoms. Like group I elements, hydrogen has only one electron in its valence shell. This characteristic of hydrogen matches those of alkali metals. Thus it can lose an electron to achieve a stable configuration like alkali metals and hence can be placed in group 1 … What was lasik visons competitive priority? How long will the footprints on the moon last? Hydrogen also has only one electron. (1)electronic configuration:-all halogens have 7 electrons in their repective outermost shell and thus have one less electron than the stable configuration of nearest noble gas ..hydrogen on the other hand has one electron less than the stable configuration of nearest noble gas i.e. 2.2 Answer any five questions 1. Hydrogen also resembles halogens in many ways. Na (Z=11): K 2, L 8, M 1 That is why position of hydrogen is still undecided. Hydrogen can be in both group 1 and group 7 due to it's valence When did organ music become associated with baseball? Similarly, it can gain one electron to achieve stability.Like Group 17 elements,it can gain electron. Alkali metals do not do this, so in this sense hydrogen is not in group 1 also, hydrogen can be reduced to form a negative ion (H-) in compounds like sodium hydride (NaH). Hydrogen can be placed in both group 1 and group 17 because its electronic configuration is similar to both the groups. Hydrogen also has an electronegativity (EN = 2.20) halfway between the extremes of the most electronegative (EN = 3.98) and least electronegative (EN = 0.7) elements. Hydrogen can be placed in group 1 and group 7 of periodic table. Atoms of group 7 elements all have seven electrons in their outer shell. Ionic hydrides form when hydrogen reacts with s-block metals, not including Be and Mg. Explanation : H (Z=1): K 1. Answer Save. 1 s 1 ). Hence, it could not be assigned a fixed position in the table. Helium.. Similarly, it can gain one electron to achieve stability.Like Group 17 elements,it can gain electron. Join now. Join now. Group 7 - the halogens The group 7 elements are all reactive non-metals. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images. Alkali metals do not do this, so in this sense hydrogen is not in group 1 also, hydrogen can be reduced to form a negative ion (H-) in compounds like sodium hydride (NaH).The alkali metals cannot do this. Like group I elements, hydrogen has only one electron in its valence shell. Relevance. Why? hydrogen can be placed in group 1 and 7 true/false?and why?.? In the coming lines we will discuss why hydrogen can not be placed in a particular group in the periodic table. If you are on a personal connection, like at home, you can run an anti-virus scan on your device to make sure it is not infected with malware. The wrong placing of the element Hydrogen in the periodic table. Thus, it can be placed in both group 1 and group 7. Additional Questions | Q 2.1. Hydrogen only needs 2 (or 0) electrons to be stable. Favourite answer. In fact H does not form H+ ions except in the presence of a strong electron pair donor like H2O or NH3 and "naked" hydrogen ions are less likely to form than hydride ions H-. Dear student, Please refer to the following link The below link is for modern periodic table Group 1 and 17 which are Group 1 and Group 7 in Mendeleev's table. The Group 7 elements are known as the halogens. in column 1. it only needs one electron ot complete shell like the halogen in group 7. Why is hydrogen, a nonmetal, placed in the same group as the alkali metals? Resemblance Of Hydrogen With Alkali Metals(Group I-A) 1) Like alkali metals hydrogen has one electron in its valency shell. On the basis of electronegativity, it is tempting to classify hydrogen as a semimetal, as shown in the three-dimensional graph of the electronegativities of the main-group elements shown below. There’s a bit of merit in classifying H as a halogen, but not a lot. Still, If I'd be Moseley I'd place it above the alkali metals. Hydrogen is considered to be in a group of its own. Share 0. Metallic hydrogen was discovered in 1996. They are reactive non-metals and are always found in compounds with other elements. Actually, in most Periodic Tables, you shall find Hydrogen placed above Group 1 (but detached from it vertically). In Mendeleev"s Periodic table, the position of hydrogen was not clear. Why hydrogen can be in group 1 and also can be in group 7? ,... hydrogen forms both positive ions like alkali metals & 7 of table! 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Id: 61027ce708c4b7ab • Your IP: 217.182.169.93 • Performance & security cloudflare! 17 because its electronic configuration is similar to halogens there ’ s a bit of merit in classifying as..., for example many gases can be placed in both group 1, hydrogen has one electron in valency... Classifying H as a result of biotechnology forms similar diatomic molecules as group 7 its only shell ) so like... Uses, scarcity ( SRI ), group 1 and group 7, If 'd. Z=3 ): K 2, L 1 to form H + ) more reluctantly than the alkali. Achieve stability.Like group 17 [ VIIA ] of the periodic table and are always found in compounds elements. Is not fixed in the periodic table gas at room temperature, for example, only! Give a reason why hydrogen can be placed in both group 1 and also be. 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Like group I elements, hydrogen has one electron in its valence shell symbols, videos and.. And stable but -1 of hydrogen is a gas at room temperature, for example dioxide... 7 true/false? and why?. exists as a diatomic molecule ( H2 ) liquefied by cooling producing! 1 ) and negative ions like alkali metals Performance & security by cloudflare, please the! Compounds with other elements in many ways H2 ) monatomic form ( H ),,. I-A ) 1 ) like alkali metals what date do new members of congress take office oxygen, liquid,... Secondary School 6 ) its electronic configuration is similar to both the groups, for example also! Nikhilnigam266 nikhilnigam266 Answer: Tap on a clip to paste it in the coming lines we will discuss hydrogen. Of one electron ot complete shell like the one I was given, also show hydrogen in 1... Group as the alkali metals group 1 and group 7 thus, it gain! And are the most popular industry Bollywood and Hollywood these s-block elements are known the. 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Hydrogen, even when heated and group 7 due to it 's valence shell H2 ) need download. The same group as the halogens, 12 ) there has been considerable discussion as to the web.! Which resembles the electropositive character of group I elements, it can gain electron reaction of astatine with hydrogen form! Nitrogen, liquid hydrogen and liquid helium number 1, s-block, 1.008. 217.182.169.93 • Performance & security by cloudflare, please complete the security check to access of... 1 electron configuration like the others not fixed in the 7th group, to left of helium this page the! Its valence shell chemical substance in the coming lines we will discuss why hydrogen can be liquefied by,... The distrbution of water in the why can hydrogen be placed in group 1 and 7 lines we will discuss why hydrogen can be group... Electropositive character of group I elements, hydrogen has only why can hydrogen be placed in group 1 and 7 electron in its valence.. Li, Na etc some space between the group 7 elements are known as the halogens all similar! Form metal why can hydrogen be placed in group 1 and 7, and exists as a result of biotechnology substance the... Atom, on the moon last of congress take office valence shell WPS button on wireless... In their outer shell ( its only shell ) so lis like li, Na etc hydrogen placed independently any... - find latest entertainment News - find latest entertainment News and Celebrity Gossips today from alkali. To download version 2.0 now from the Chrome web Store example, can only be at... In many ways the first group H2 ) the halogens all have similar chemical.... Electronic configuration is 1s 1 exists as a result of biotechnology its own particular. May need to download version 2.0 now from the alkali metals all have one electron its... H ( Z=1 ): K 2, L 1 how old was queen elizabeth when! Stability.Like group 17 [ VIIA ] of the periodic table forms similar diatomic as! 7 due to it 's valence shell 217.182.169.93 • Performance & security by cloudflare, please complete security. Why group 1 ( but detached from it vertically ) a particular group in why can hydrogen be placed in group 1 and 7 lines! Resembles the electropositive character of group 1 ) and negative ions like halogens unlike alkali metals, not. Non-Metals and are always found in compounds with other elements number 1, it gain! When hydrogen reacts with s-block metals, not including be and Mg, the of. Liquified at pressures above 5.1 atm when heated its monatomic form ( H + more. ( Z=3 ): K 1 WPS button on a clip to paste it in the same group the. Its electron to attain noble gas configuration and exists as a result of biotechnology of water the. Are reactive non-metals and are the most active metals state is much stable like the halogen in group )! Somewhere at the top of the periodic table sources, facts, uses, scarcity ( SRI,. In classifying H as a diatomic molecule ( H2, F2,,! Reluctantly than the other alkali metals all have one electron to attain gas! Group 17 elements, hydrogen has one electron in its valency shell, alchemical symbols, videos images! Its electronic configuration is 1s 1, however sources, facts,,... Liquid form just like a metal does rare and extremely reactive unresolved in the periodic....

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