Question

Give the no of protons,neutrons and electrons in the following 56 Ba 130

Answer 1

No.of protons=No.of electrons=Atomic No.

No. of protons=No.of electrons=56

Now, how we calculate no.of neutrons,

OK now see

we know

No.of protons+No.of neutrons=Atomic Mass

56+No.of neutrons=130

No.of neutrons=130-56

No.of neutrons=74

Answer 2

Your answer:

56 protons (130−56= 74)

74 neutrons.