Question

.If the atom of element has atomic number 20.Then the group and period to which element belongs is *


a.2nd group and 4th period

b.12th group and 4th period

c.4th group and 2nd period

d.None of above

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Answer 1

Answer:

2nd group and 4 th period

Explanation:

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Answer 2

Answer:

a. 2nd group and 4th period

Explanation:

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