Question

20.
A metal has same number of proton ar
ds same number of proton and neutron and has mass number 40. and has a
charge + 2.
(a) Find electron, proton and neutron in it.
(b) Name the metal
(c) Give the electronic configuration for it in its atomic state.
(d) Write number of electrons present in its M shell in its atomic state.​

Answer 1

Answer:

b. I think it would be argon...