Question

34. a) From the samples given below, identify the following.
(i) Cation
(ii) the pair of isobars
(ii) the pair of isotopes
Give reason for your choice of samples in each case
b) Write the mass number and atomic number of the samples A, B, C, D
c) Write the electronic configuration of A and B
Electrons
Neutrons
Protons
Samples
18
16
A
17
18
19
18
B
20
17
C
17
17
17
17
D
fense

Answer 1

Answer:

(i) Cation

(ii) the pair of isobars

(ii) the pair of isotopes

Give reason for your choice of samples in each case

b) Write the mass number and atomic number of the samples A, B, C, D

c) Write the electronic configuration of A and B

Explanation:

Answer 2

Answer:

Isotopes are those which have same atomic number but different mass number, whereas isobars are those which have a different atomic number but the same mass number.

Here,

17

35

Cl and

17

37

Cl are isotopes whereas

18

40

Ar and

20

40

Ca are isobars.

Explanation:

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