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The formula of iron formed by and element A is `A^(2+)` The element A can probly belong to which of the following groups?

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The formula of iron formed by and element A is `A^(2+)` The element A can probly belong to which of the following groups?
A. IIIA
B. VIIA
C. IIA
D. IA
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Answer:
The formula of ion formed by A is `A^(2+)`
`rarr`valency of A is 2
`therefore` A belong to II A group
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