What makes the placement of hydrogen both in group one and group 17 in appropriate?
Chemistry
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Apr 13
The placement of hydrogen in both group one and group 17 is appropriate because hydrogen exhibits properties of both alkali metals (group one) and halogens (group 17).
In terms of its electron configuration, hydrogen has one electron in its outer shell, similar to the alkali metals. It can lose this electron to form a positive ion, similar to how alkali metals readily lose their outer electron to form cations.
On the other hand, hydrogen can also gain an electron to achieve a stable electron configuration, similar to the halogens. This ability to gain an electron allows hydrogen to form a negative ion, similar to how halogens readily gain an electron to form anions.
Therefore, the placement of hydrogen in both group one and group 17 reflects its unique position in the periodic table, as it shares properties with both alkali metals and halogens.