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Q.

An element X belongs to Group 14 and 2nd period of the periodic table. Its atomic number will be

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a

7

b

14

c

15

d

6

answer is A.

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Detailed Solution

The element belong to group 14, so it has four electrons in its valence shell. Since it is present in 2nd period it has two shells. Therefore, the electronic configuration of the element will be 2, 4. Hence, atomic number of the element is six.The atomic number will be 2 + (14 - 10) = 6

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