Question

The atomic number of Al is 13 and that of Cl is 17.​how many electrons, protons, neutrons, are present in Al3+ and Cl- ions.

Answer 1

10 And 18 Electrons

Given:

Atomic Number of Aluminium (Al) = 13

Atomic Number of Chlorine (Cl) = 17

Atomic Number is the number of electrons that is present in the atom.

To Find:

Number of Electrons in Al3+

Number of Electrons in Cl-

Calculating:

No. of electrons in Aluminium:

If it is + 3 then we have to minus 3 electrons

(Al3+)

Substituting the values we get:

= 13 - 3

= 10

Therefore, the number of electrons in Aluminum +3 is 10 electrons.

No. of electrons in Chlorine:

If it is - 1 then we have to add 1 electron

(Cl-1)

Substituting the values we get:

= 17 + 1

= 18

Therefore, the number of electrons in Chlorine -1 is 18 Electrons.