Question

What is the electronic configuration of element Y whose mass no. is 27 and no.of neutron is 14?​

Answer 1

atomic mass = no.of neutron+no.of electron

27=14+ no.of electron

27-14= no.of electron

no.of electron=13

means atomic number is 13 (no.of electron is equal atomic number)

Y element is aluminum , atomic number 13

electronic configuration- k shell=2,L=8,M =3

valency of aluminium is 3

please follow me

Answer 2

Answer:

Electronic Configuration: 2.8.3

Explanation:

Hope It Helped You And Please Mark My Answer As Brainlist