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Q.

If an atom has 11electrons, 11 protons and 12 neutrons. Then what is its atomic number (Z)

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a

12

b

22

c

23

d

11

answer is D.

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Detailed Solution

The atomic number of an element is defined as the number of electrons or protons present in the neutral atom. Given atom has 11electrons, 11 protons, and 12 neutrons. Therefore atomic number is 11.

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