Which of the following is known as alkaline earth metal?

Question

Question

This question was previously asked in

SSC CGL 2020 Tier-I Official Paper 19 (Held On : 24 Aug 2021 Shift 1)

Answer 1

The correct answer is Magnesium.

Key Points

The alkaline earth metals are named after the alkaline earth whose old-fashioned names were beryllia, magnesia, lime, strontia, and baryta, after their oxides. When mixed with water, these oxides are simple (alkaline).
The elements of Group 2 of the periodic table are alkaline earth metals.
Beryllium, magnesium, calcium, strontium, barium, and radium are the elements in Group 2.
- For two reasons, these elements are referred to as Alkaline Earth metals. Their oxides remain in the crust of the earth and are very heat-stable.
In group 1 of the periodic table, alkali metals are the elements.
- The key distinction between alkaline and alkali is that there is one valence electron in alkali metals, while two valence electrons are in alkaline earth metals.

Additional Information

Metal	Details
Copper	Copper is a chemical element with the symbol Cu and atomic number 29. Atomic mass: 63.546 u Melting point: 1,085 °C.
Platinum	Platinum is a chemical element with the symbol Pt and atomic number 78. Atomic mass: 195.084 u Melting point: 1,768 °C
Cobalt	Cobalt is a chemical element with the symbol Co and atomic number 27. Atomic mass: 58.933195 u Melting point: 1768 K
Magnesium	Magnesium is a chemical element with the symbol Mg and atomic number 12. Atomic mass: 24.305 u Melting point: 650 °C