Question

Question 1. Write the number of protons, electrons and neutrons in the following atoms:

1. Sulphur atom atm no 16 atm wt 32
2. Neon atom atm no 10 atm wt 20
3. Sodium atom atm no 11 atm wt 23
4. Fluorine atom atm no 9 atm wt 19​

Answer 1

Explanation:

(1) Sulphur atom atm no 16 atm wt 32

protons = atomic number=16

electron=number of proton in the neutral atom=16

Neutrons = atomic weight-no. of proton

=32-16 =16

2. Neon atom atm no 10 atm wt 20

proton-atm.no-10

electron=number of proton in the neutral atom

= 10

neutron-20-10=10

3. Sodium atom atm no 11 atm wt 23

proton = 11

electron-11

neutron =23-11=12

Fluorine atom atm no 9 atm wt 19

protorn=9

electron=9

neutron=19-9=10

Answer 2

Answer:

1.electrons: 16, protons: 16, neutrons: 16

2.electrons: 10, protons: 10, neutrons: 10

3.electrons: 11, protons: 11, neutrons:12

4.electrons: 9, protons: 9, neutrons: 10

Explanation:

we know that atomic number (Z)= no. of protons and electrons.

And the atomic mass(A)=protons+neutrons (b'coz the mass of the atom is concentrated in nucleus which is comprised of neutrons and protons).