Question

Which of the following are true for an element? (i) Atomic number = number of protons + number of electrons. (ii) Mass number = number of protons + number of neutrons (iii) Atomic mass = number of protons = number of neutrons (iv) Atomic number = number of protons = number of electrons

(a) (i) and (ii)

(b) (i) and (iii)

(c) (ii) and (iii)

(d) (ii) and (iv)​

Answer 1

Answer:

(d) ii and iv