The electronic configuration of calcium is $2, 8, 8, 2$ . Find the valency of the element.

8

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2

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6

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4

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Solution

The correct option is A $2$
The valency of a group 2 element is decided by the number of valence electrons. Here, the number of valence electrons is $2$ . Therefore, the valency is $2$ .

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Similar questions

Why is the electronic configuration of calcium 2,8,8,2 but not 2,8,9,1?

2, 8, 8, 2

The electronic configuration of calcium is 2,8,8,2. So why we can't write it as 2,8,9,1?

1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{2}

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