| I: Zn, |
| II: Mg, |
| III: Al, |
| IV: Be |
A) I, II, III, IV
B) I, II, IV
C) II, IV
D) I, III
Correct Answer: B
Solution :
[b] In IIA group only be gives, \[{{H}_{2}}\]gas with alkaline solution other alkaline earth metals don't react. \[Be+2NaOH+2{{H}_{2}}O\to N{{a}_{2}}Be{{O}_{2}}.2{{H}_{2}}O+{{H}_{2}}\]
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