Question

7) Deduce from the datum provided.
To deduce
Datum
(1) Na
Neutron number
(2) uc
Mass number
() C1
Proton number


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Answer 1

Answer:

neutron number in Na =23-11=12

mass number in c=12-6=6

proton number=6

Answer 2

Answer:

To deduce the datum:

1. The no of neutron: 12.
2. Mass no of carbon is equal to 14
3. The proton no of Chlorine is equal to 17

Explanation:

Since, number of protons is always equal to number of electrons an atom remains electrically neutral. This number is known as the atomic number given in subscript. The mass number, given in superscript is the total of number of protons and neutrons.

Hence, the number of the neutron is equal to difference between mass no and atomic number. Hence the no of a neutron in sodium is 23-11 = 12. "Mass number of carbon" is the superscript that is 14.