Calculate the approximate charge in coulomb of the nucleus of followin

1.	Calculate the approximate charge in coulomb of the nucleus of following elements-(i) He (ii) Li (iii) c-14 isotope
Answer» (i) Charge on one proton = 1.6 × 10⁻¹⁹ C Number of protons present in He = 2 \(\therefore\) Charge on 2 protons = 2 × 1.6 × 10⁻¹⁹ = 3.2 × 10⁻¹⁹ Coulomb (ii) Number of protons present in Li = 3 \(\therefore\) Charge on 3 protons = 3 × 1.6 × 10⁻¹⁹ = 4.8 × 10⁻¹⁰Coulomb (iii) Number of protons present in C = 6 \(\therefore\) Charge on 6 protons = 6 × 1.6 × 10⁻¹⁹ = 9.6 × 10¹⁹Coulomb

Calculate the approximate charge in coulomb of the nucleus of following elements-(i) He (ii) Li (iii) c-14 isotope

Answer»

(i) Charge on one proton = 1.6 × 10⁻¹⁹ C

Number of protons present in He = 2

\(\therefore\) Charge on 2 protons = 2 × 1.6 × 10⁻¹⁹

= 3.2 × 10⁻¹⁹ Coulomb

(ii) Number of protons present in Li = 3

\(\therefore\) Charge on 3 protons = 3 × 1.6 × 10⁻¹⁹

= 4.8 × 10⁻¹⁰Coulomb

(iii) Number of protons present in C = 6

\(\therefore\) Charge on 6 protons = 6 × 1.6 × 10⁻¹⁹

= 9.6 × 10¹⁹Coulomb