Question

If the atomic number and some
mass of an elementares and
respectively. Find out the number
of electron present in it
O 18
O 20
ООО
22​

Answer 1

Answer:

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Explanation:

The atomic number of the element is 11. Hence it contains 11 protons and 11 electrons since the element is neutral. Its mass number is 23 and hence it contains (23-11) = 12 neutrons