Question

An atom having atomic mass number 13 has 7 neutrons what is the atomic number of the atom

Answer 1

Answer:

Carbon atoms with 7 neutrons have atomic mass of 13 (6 protons + 7 neutrons = 13). These atoms are the isotope called carbon-13.

Answer 2

The atomic number of the atom is 6

Explanation:

Atomic number is defined as the number of protons or electrons that are present in a neutral atom.

Atomic number = number of protons = number of electrons

Mass number is defined as the sum of number of protons and neutrons that are present in an atom.

Mass number = Number of protons + Number of neutrons

We are given:

Mass number = 13

Number of neutrons = 7

Number of protons = Atomic number = 13 - 7 = 6

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