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Question

If the number of electrons in a neutral atom is 6 and the number of neutrons is 8. Then the atomic mass of that element will be ___.


A

6 u

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B

8 u

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C

12 u

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D

14 u

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Solution

The correct option is D

14 u


Given, number of electrons = 6 and number of neutrons = 8

Atomic mass = no. of protons + number of neutrons.

We know that in a neutral atom, the number of protons = number of electrons

the no. of protons in the given atom = 6

So, atomic mass= 6 + 8 = 14


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