Question

Odd man out. Lithium, sodium, calcium, potassium

Answer 1

Answer:

Lithium

Explanation:

Lithium is the odd one out because others derived their names from Latin while Lithium did not.

Answer 2

The odd one out from Lithium, sodium, calcium, potassium is calcium. Rest all belong to the same group.

Calcium:

• The chemical element calcium has the atomic number 20 and the letter Ca as its symbol.
• Calcium is an alkaline earth metal that reacts with air to create a black oxide-nitride coating.
• Its heavier homologs barium and strontium are most similar to it in terms of physical and chemical characteristics.

Lithium:

• A chemical element with the atomic number 3 and the symbol Li is lithium.
• It is a delicate, white-silver alkali metal.
• It is the least dense metal and the least dense solid element under typical conditions.

Sodium:

• Sodium is a chemical element with the atomic number 11 and the symbol Na (derived from the Latin natrium).
• It is a delicate, silvery-white metal that is exceedingly reactive.
• Due to its placement in group 1 of the periodic table, sodium is an alkali metal.
• $Na^{23}$ is the only stable isotope of it.
• The free metal must be synthesized from compounds because it does not exist in nature.

Potassium:

• The chemical element potassium has the atomic number 19 and the letter K as its symbol.
• Potassium is a silvery-white metal that may be easily and gently sliced with a knife.
• Within seconds of exposure, potassium metal quickly combines with air oxygen to produce flaky, white potassium peroxide.

#SPJ3