Question

An atom of aluminum (Al) has an atomic number of 13 and a mass number of

27. How many neutrons does it have?
Ο Α. 40
B. 27
C. 14
D. 13

Answer 1

An atom of aluminum (Al) has 14 neutrons.

Step-by-step explanation:

An atom of aluminum (Al) has an atomic number of 13 and a mass number of 27. The atomic number of an element represents the number of protons in its nucleus. Since aluminum has an atomic number of 13, it means that it has 13 protons.

The mass number of an atom is the sum of protons and neutrons in its nucleus. To find the number of neutrons, we subtract the atomic number (number of protons) from the mass number. In this case, subtracting 13 from 27 gives us 14 neutrons.

So, an atom of aluminum (Al) has 14 neutrons.

Learn more about Number of neutrons in an aluminum atom