Question

1) An aluminum atom has the atomic number 13 and a mass number of 27.
(a) State how many electrons, protons and neutrons the atom has.

(b) Draw a diagram of the atom, showing the electrons in their shells.

Answer 1

Answer:

Explanation: The mass number is the total number of protons and neutrons in a nucleus. The atomic number is the number of protons in the nucleus. →27−13=14 neutrons!

Answer 2

Answer:

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