Question

20(iii) Which of the following is true for an element?
(a) Atomic number = number of protons + number of electrons
(b) Mass number = number of protons x number of neutrons
(c) Atomic mass = number of protons = number of neutrons
(d) Atomic number = number of protons
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Answer 1

Answer:

answers are

Explanation:

All questions are true here...

all are true one...

Answer 2

Solution :

Points (ii) and (iv) are correct.