Question

Hydrogen combines with other elements by :

• A. Losing an electron
• B. Gaining an electron
• C. Sharing an electron
• D. Losing, gaining and sharing of an electron

Answer 1

Answer: (D)

Losing, gaining and sharing of an electron

Answer 2

Hydrogen can combine with other elements by losing, gaining and sharing of electrons

(i) Losing of electron : H2 + F2 $\longrightarrow$2H+F–

(ii) Gaining of electrons : 2Na + H2 $\longrightarrow$2Na+H–

(iii) Sharing of electrons : $N_{2} + 3H_{2}\underset{\begin{aligned} & 500^{0}C \\ & Highpressure \end{aligned}}{\overset{\quad Fe + MO\quad}{\rightarrow}}$

$C + 2H_{2}\overset{\quad 1200^{0}C\quad}{\rightarrow}CH_{4}$