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In an atom of the element X there are th...

In an atom of the element X there are three shells and 2 electrons are in its outermost shell.
a) Write down the electronic configuration of this element.
b) Find the group and period of this element.
c) What is the valency shown by this element.

Text Solution

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a) 2,8,2
b) group number -2 period number - 3
c) 2
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