Question

if an element X has mass number 23 and it has 13 neutrons then write atomic number​

Answer 1

Answer:

mass no=neutrons + protons

23=13+protons

protons=10

atomic no=protons=electrons

atomic no=10

Explanation:

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Answer 2

Answer:

The element X has the mass number 23 and it has 13 neutrons has atomic number = 10.

Explanation:

It is given in the question that the given element X has a mass number = 23

We know that mass number is the sum of the number of protons and the number of neutrons.

Here it is also given that the number of neutrons =13

That means, the number of protons = 23 - 13

                                                            = 10

We know that atomic number is equal to the number of protons in an atom

hence, number of protons= number of electrons= atomic number = 10 in the given atom X.