Question

c
D
17.
17. Which amongst the following is not considered as trial?
(a) Calcium (40) Strontium 876
(b) Lithium (7) Sodium (23)
(c) Carbon (12) Nitrogen (14)
(d) Chlorine (35.5) Bromine (80)
Barium (137.6)
Potassium (39)
Oxygen (76)
lodine (127)
Marks​

Answer 1

Answer:

a) Calcium (40) Strontium 876