Question

The composition of two atomic particles is given below X
Y
Protons 8
8
Neutrons 8
9
Electrons 8
8
(i) What is the mass number of X ?
(ii) What is the mass number of Y ?
(iii) What is the relation between X and Y ?
(iv) Which element/elements do they represent ?

Answer 1

Answer:

• Mass number of X is 16
• Mass number of Y is 17
• X and Y are isotopes
• X is Oxygen-16 and Y is Oxygen-17

Explanation:

• Isotopes are elements having same number of protons but different number of neutrons
• Mass number=no. of protons+ no.of neutrons