Study the data given below and answer the questions which follow … - Vidyadip

Question

Study the data given below and answer the questions which follow

Particle	Electrons	Protons	Neutrons
A	2	3	4
B	10	9	8
C	8	8	8
D	8	8	10

i. Write the mass number and atomic number of particles A, B, C, D.
ii. Which particles represent a pair of isotopes? Explain.

✓

Answer

i.

Particle	Atomic number	Mass number
A	3	$3+4=7$
B	9	$9+8=17$
C	8	$8+8=16$
D	8	$8+10=18$

ii. Particles C and D as they have same number of protons, i.e. same atomic number but different mass number.

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