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Periods

An element X ...

Question

An element X belongs to group fourteen and second period of the periodic table. Its atomic number is:

A

six

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B

seven

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C

eleven

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D

fifteen

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Solution

The correct option is A six
Being in group fourteen, the given element has four electrons in its valence shell. Since it is present in second period, its second shell is the valence shell. Hence, the electronic configuration of the element is 2, 4 and the atomic number of the element is six.

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