To which of the following family of elements does potassium belong?

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Question

This question was previously asked in

RRB JE Previous Paper 11 (Held On: 25 May 2019 Shift 3)

Answer 1

Alkali metals when reacting with water, form Alkalis i.e. strong base which can neutralize the acid.
Example of Alkali metals: Lithium(Li),Sodium(Na), Potassium (K), Rubidium (Rb), Cesium (Cs) and Francium (Fr).

Group	Meaning	Elements
Alkali metals	When reacting with water, form Alkalis i.e. strong base which can neutralize the acid	Lithium(Li),Sodium(Na), Potassium (K), Rubidium (Rb), Cesium (Cs), and Francium (Fr).
Alkaline earth metals	When they react with water form Alkaline solutions (hydroxides)	Beryllium (Be), Magnesium (Mg), Calcium (Ca), Strontium (Sr), Barium (Ba), and Radium (Ra).
Noble gases	They don’t react with anything. Also called inert gases.	Helium (He), Neon (Ne), Argon (Ar), Krypton (Kr), Xenon (Xe), Radon (Rn), and Oganesson (Og).
Halogens	Non-metals and react with the metal to form the salt. Halogen(in Greek halogen means salt-producing)	Fluorine (F), Chlorine (Cl), Bromine (Br), Iodine (I), and Astatine (At).