Question

Which one out of the following is divalent

• A. Na
• B. Al
• C. Sr
• D. None of these

Answer 1

The correct option is C

Sr

Symbol:-

• A chemical symbol is a representation of chemical elements using one or two letters.
• Every element of the periodic table is represented by a different symbol. Example:- Sodium ⟶Na

Divalent Cations:

• Are the positively charged ions having their valency (2+).
• They are also known as bivalent cations.
• They are the basic radicals formed by the removal of hydroxide ions from the base.
• Divalent cations lose two valence electrons and attain a positive charge

The explanation for the Correct answer:

• Sr is a symbol of strontium.
• The electronic configuration of Sr is [Kr] 5s²
• Donating two-electron achieves the stable inert gas configuration.
• Therefore sr is a divalent ion.

The explanation for the Correct answer:

• Na is a monovalent ion.
• Al is a trivalent ion.

Therefore the Strontium is a divalent ion hence option (B) strontium is the correct answer.