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zaharov [31]
3 years ago
11

What is the atomic number of the atom shown?

Biology
2 answers:
Bond [772]3 years ago
5 0
Atomic number is equal to the number of protons in an atom, elements’ identity are related to the number of their protons. So, its 18
ElenaW [278]3 years ago
5 0

Answer:

18

Explanation:

Atomic number of an element is defined as the number of protons present in the element.

The mass number of an element is defined as the addition of the number of proton and neutron present in the element.

In the example above, the atom has a proton of 18. This signifies that the atomic number of the element is 18.

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