Find the symbol of an element X, if its mass number is A and atomic number is Z respectively.
AXZ
ZAX
AZX
ZXA
(a) What is meant by (i) atomic number, and (ii) mass number, of an element? Explain with the help of an example.
(b) What is the relation between the atomic number and mass number of an element?
(c) If an element M has mass number 24 and atomic number 12, how many neutrons does its atom contain?
The mass number and atomic number of an element is 23 and 11 respectively. What is the number of nucleons present in it?