A) The ionization energy of hydrogen is to high for group of alkali metals, but too low of halogen group
B) Hydrogen can form compounds with all other elements
C) Hydrogen is much lighter element than the alkali metals or the halogens
D) None of the above
Correct Answer: A
Solution :
The ionization energy of hydrogen is to high for group of alkali metals, but too low for halogen group.
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