Question

5. Explain why average atomic masses of many dumul
6. The number of protons, neutrons and electrons in particles from A to E are given below:
Particle
Protons
Neutrons
17
18
Electrons
17
B
3
22
18
18
20
17
D
17
10
E
10
(b) Which one is anion?
(a) Which one is cation?
(c) Which of these represent a pair of isotopes?​

Answer 1

Answer:

5.Most of the elements exist in different isotopes i.e. atoms with different masses e.g. Cl has two isotopes with mass numbers 35 and 37 existing in the ratio 3:1. Hence average value is taken.

6. A and D ; Same number of protons but different number of neutrons

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