Why is hydrogen placed in Group 1 and not 17?

Hydrogen is placed above group in the periodic table because it has ns1 electron configuration like the alkali metals. However, it varies greatly from the alkali metals as it forms cations (H+) more reluctantly than the other alkali metals. Hydrogen has a much smaller electron affinity than the halogens.

What is the difference between hydrogen and Group 17 elements?

Hydrogen often combines with negative, non-metallic ions to form acids and organic molecules. Halogens, on the other hand, only form negatively-charged ions that react with metallic, positive ions to make ionic compounds like salts.

Which element does not react with hydrogen?

The surfaces of metals that do not combine with hydrogen to form stable hydrides (e.g., platinum) catalyze the recombination of hydrogen atoms to form hydrogen molecules and are thereby heated to incandescence by the energy that this reaction releases.

Is hydrogen from Group 1?

Group 1 of the periodic table includes hydrogen and the alkali metals. Because they have just one valence electron, group 1 elements are very reactive.

Why is hydrogen not an alkali?

Hydrogen is not an alkali metal itself, but has some similar properties due to its simple one proton (loctated in the nucleus), one electron arrangement. The lone electron exists in a s -orbital around the nucleus. Cesium Orbitals. This one electron is very easily removed during chemical reactions.

What is the difference between hydrogen and alkali metals?

Difference between hydrogen and alkali metals: 1) Hydrogen is a non metal whereas alkali metals are metals. 2) Hydrogen can form both ionic as well as covalent compounds whereas alkali metals only form ionic compounds. 4) Hydrogen is a gas at room temperature whereas alkali metals are solid at room temperature.

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