______ is the only non-metal placed with alkali metals.

Question

Question

This question was previously asked in

RRC Group D Previous Paper 35 (Held On: 8 Oct 2018 Shift 2)

Answer 1

The correct answer is Hydrogen.
Key Points

Hydrogen is the only non-metal placed with alkali metals.
Hydrogen and alkali metals are placed in group 1 of the periodic table.
This is so because Hydrogen and alkali metals both have only one electron in their valence shell.
Alkali metals include Lithium (³Li), Sodium (¹¹Na), Potassium (¹⁹K), Rubidium (³⁷Rb), Caesium (⁵⁵Cs), and Francium (⁸⁷Fr).
Alkali metals along with Alkaline Earth metals form the s-block elements since the last electron enters the s-orbital.
Alkali metals are highly reactive, shiny, and soft metals. They readily lose their valence electron to become cations with a +1 charge.
These react with acids to form salt and hydrogen gas. For eg:
- 2Na + 2HCl → 2NaCl + H₂