Question

In its properties hydrogen resemble

• A. Alkali metal only
• B. Halogen only
• C. Neither alkali nor halogen
• D. Alkali metal as well as halogen

Answer 1

The correct option is D

Alkali metal as well as halogen

Alkali metal

• Alkali metal is any of the six chemical elements that make up Group 1 of the periodic table—namely, lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr).
• The alkali metals are so called because reaction with water forms alkalies (i.e., strong bases capable of neutralizing acids).

Halogen:

• Halogen is any of the six nonmetallic elements that constitute Group 17 (Group VIIa) of the periodic table. The halogen elements are fluorine (F), chlorine (Cl), bromine (Br), iodine (I), astatine (At), and tennessine (Ts).
• They were given the name halogen, from the Greek roots hal- (“salt”) and -gen (“to produce”), because they all produce sodium salts of similar properties, of which sodium chloride.

The explanation for the correct answer:

• ${\mathrm{H}}_2$​ like halogens gains one electron to form a stable duplet.
• Also, it loses one electron like alkali metals to form ${\mathrm{H}}^{+}$ ion.

Therefore the correct option is (D) i.e Alkali metal as well as Hydrogen.