VIEW SOLUTION. All Rights Reserved. elements in group I-A. Explanation : H (Z=1): K 1. The alkali metals cannot do this. Review. Hydrogen: description Your user agent does not support the HTML5 Audio element. It has a standard atomic weight of 1.008, meaning it is the lightest element in the periodic table.. Hydrogen is the most common chemical element in the Universe, making up 75% of all normal (baryonic) matter (by mass).Most stars are mostly hydrogen. 1. In addition if hydrogen loses its one electron how come it becomes positively charged, im confused because wouldn't it have no charge and what happens if an atom loses all its electrons? It might be included in group 1 (one). However, hydrogen resembles two groups: the alkali metal group (or the lithium family) and the halogen group (or the fluorine family). Hydrogen is 1 proton (+) 1 electron (-) ... or water is amphoteric, which a metal cant be. Hydrogen resembles alkali metals, like Na, because of their similarity in electronic conguration.Both of them have 1 valence electron. He did so because hydrogen and alkali metals have similar properties. One more interesting fact that Hydrogen also resembles the elements of Group 17, that are halogens, because they can gain 1 electron and achieve noble gas conguration.. That is why position of Hydrogen is always a controversial point. An oxidation state of +1 is very unstable in all halogens. You can specify conditions of storing and accessing cookies in your browser, Because the alkali metals do not considersd as hydrogen. Hydrogen has 1 electron that is in the 1s orbital. Favourite answer Well that hydrogen is a gas is not enough of a reason, as all the elements can be gaseous. Properties of hydrogen do not completely match any one of the above-mentioned groups. and all the other group 1 elements are solid metals. How long will the footprints on the moon last? Hydrogen is considered as a very unique element.The position of this small element in the periodic table is debatable. Compare and contrast hydrogen and francium. When did organ music become associated with baseball? Log in. However, the reason that hydrogen is sometimes seen with group 1 is firstly because it can form a 1+ cation, but also, at high pressures and temperatures, hydrogen adopts the lattice … some forms of the periodic table show hydrogen above the rest of The alkali metals cannot do this. Who is the longest reigning WWE Champion of all time? With a standard atomic weight of 1.008, hydrogen is the lightest element in the periodic table.Hydrogen is the most abundant chemical substance in the universe, constituting roughly 75% of all baryonic mass. How old was Ralph macchio in the first Karate Kid? please remember ther is some space between the group 1A and Hydrogen. This is a gas at room temperature, for example. Hydrogen's Placement in the Periodic Table. Its monatomic form (H) is the most abundant chemical substance in the Universe, constituting roughly 75% of all baryonic mass. What is the distrbution of water in the lithosphere? Copyright © 2021 Multiply Media, LLC. It is - Group 1 (IA,IA): the alkali metals or hydrogen family/lithium family, Hydrogen, with a solitary electron, is usually placed at the top of Group 1 of the periodic table, but it is not considered an alkali metal; rather it exists naturally as a diatomic gas. Of these, 5 H is the most stable, and 7 H is the least. Li (Z=3): K 2, L 1. Extensive hydrogen bonding in the liquid state explains why hydrogen fluoride (HF), water (H 2 O), and ammonia (NH 3) have boiling points much higher than those of their heavier analogues, hydrogen chloride (HCl), hydrogen sulfide (H 2 S), and phosphine (PH 3). Hydrogen is placed above group in the periodic table because it has ns 1 electron configuration like the alkali metals. Hydrogen is a chemical element. Also, as its atomic number is 1,it is first in the periodic table. The s-block elements consist of groups 1 and 2, so electronically, hydrogen belongs to this group. Hydrogen can be in both group 1 and group 7 due to it's valence shell. 5 years ago. Why is hydrogen not considered to be a member of group 1 the alkali metals? What are the safety precautions on using of magnifying glass? A proper position could not be assigned to it because of the following reason: 1) In some properties it resembles alkali metals.As such, it can be placed in group 1 of the periodic table along with alkali metals. Is there a way to search all eBay sites for different countries at once? Secondary School. The word "alkali" received its name from the Arabic word "al qali," meaning "from ashes", which since these elements react with water to form hydroxide ions, creating alkaline solutions (pH>7). , Haan bahot buri h xD ❤️Jara btao itna cuteee kyu ho tum ⚠️♻️Mera toh sone ka plan tha but pic dekh ke neend hi udgyi xD, do join at any time id 6648960789 code 12345 u can report also. Na (Z=11): K 2, L 8, M 1 Hydrogen is a chemical element with atomic number 1 which means there are 1 protons and 1 electrons in the atomic structure.The chemical symbol for Hydrogen is H. With a standard atomic weight of circa 1.008, hydrogen is the lightest element on the periodic table. james harrington asked the Naked Scientists: Dear Dr. Chris, I'm a GCSE chemistry student (taking it through to AS and A level) and i've always been puzzled why hydrogen is in group 1 of the periodic table (with the alkali metals). it is physically very different from all the other group 1 5 points State any two reasons Why hydrogen is kept in group 1 in modern periodic table? So due to isotope of hydrogen it is not placed on fixed place. Note that while hydrogen is normally shown at the top of the Group 1 elements in the periodic table, the term "alkaline metal" refers to the Group 1 elements from lithium downwards and not hydrogen. there is variety of isotope of element found it is not possible to arrange in periodic table if they arranged on the basis of atomic mass. there is variety of isotope of element found it is not possible to arrange in periodic table if they arranged on the basis of atomic mass. Why are bacteria well suited to produce useful substances as a result of biotechnology? Resemblance with alkali metals
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