Interpretation: To determine the reason why hydrogen element is not placed in group 17.
Concept Introduction: The elements which have 7 valence electrons and need only one electron to complete their octet, are named group 17 elements.
Hydrogen would be placed in group 1 because it has identical properties to alkali metals.
The
The chemical property of the hydrogen atom is identical to group 1.
- Hydrogen will be less reactive but halogens are very reactive.
- Hydrogen has lesser
electron affinity than halogens.
Chapter EH Solutions
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