Why is hydrogen placed in a group by itself

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I think it should be halogens because-Like halogens hydrogen can also form both ionic and covalent bond! And hyrdrogen even reacts whith H2O. Its an obvious halogen. It is just relatively a much weaker oxidizer than the other halogens. You are commenting using your WordPress. You are commenting using your Google account. You are commenting using your Twitter account.

You are commenting using your Facebook account. Notify me of new comments via email. Notify me of new posts via email. These three methods are most industrially feasible cost effective methods of producing H 2 g. There are two important isotopes of hydrogen. Deuterium 2 H has an abundance of 0. 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.

Reactions of Hydrogen with Nonmetals Unlike metals forming ionic bonds with nonmetals, hydrogen forms polar covalent bonds. Reactions with Transition Metals Reactions of hydrogen with Transition metals Group form metallic hydrides.

Other Sources of Hydrogen Hydrogen gas can be prepared by reacting a dilute strong acid like hydrochloric acids with an active metal. Isotopes There are two important isotopes of hydrogen. It is a nucleus containing a single proton.

Deuterium 2 H is another an isotope containing a proton and neutron, consisting of only 0. Commonly indicated with symbol D and sometimes called heavy hydrogen, deuterium is separated by the fractional distillation of liquid hydrogen but it can also be produced by the prolonged electrolysis of ordinary water. Approximately , gallons of water will produce a single gallon of D 2 O, "heavy water". This special kind of water has a higher density, melting point, and boiling point than regular water and used as a moderator in some fission power reactors.

Deuterium fuel is used in experimental fusion reactors. Replacing protium with deuterium has important uses for exploring reaction mechanisms via the kinetic isotope effect.

Tritium 3 H contains two neutrons in its nucleus and is radioactive with a It is can also be made in a lab from Lithium-6 in a nuclear reactor. Tritium is also used in hydrogen bombs. It is very rare about 1 in every 1, atoms and is formed in the environment by cosmic ray bombardment. Most tritium is manufactured by bombarding Li with neutrons. Tritium is used in thermonuclear weapons and experimental fusion reactors.

References Shultz, M. Journal of Chemical Education 86 9 , Rigden, John. Hydrogen: The Essential Element. The President and Fellows of Harvard College. Why is hydrogen placed in Group 1 and not 17? What is the difference between hydrogen and Group 17 elements?

Which element does not react with hydrogen? Is hydrogen from Group 1? Why is hydrogen not an alkali? What is the difference between hydrogen and alkali metals? Why is hydrogen so special? It is a chemical element that exists as a gas at room temperature and when hydrogen gas burns in air, it forms water.

A hydrogen atom contains one proton, and only one electron. Pure hydrogen exists as hydrogen gas, in which pairs of hydrogen atoms bond together to make molecules. Why Hydrogen is a non metal? Hydrogen is a nonmetal and is placed above group in the periodic table because it has ns1 electron configuration like the alkali metals.

Hydrogen also forms H2 dihydrogen like halogens. Where is hydrogen found? It is found in the sun and most of the stars, and the planet Jupiter is composed mostly of hydrogen. On Earth, hydrogen is found in the greatest quantities as water. It is present as a gas in the atmosphere only in tiny amounts — less than 1 part per million by volume.

What groups can hydrogen act like? Hydrogen, like the halogens, has one electron short of a complete outer shell and can form H- ions like Cl- and therefore forms ionic compounds with reactive metals — NaH similar in structure to NaCl.

Hydrogen also exists as a diatomic gas like fluorine and chlorine. What is the definition of experiment in science? Can retaining walls be painted?