A elements are named as alkali metals because_______________?
Correct answer: C. Both A & B
- A. Their oxides are basic
- B. Their oxide and hydroxides are water soluble
- C. Both A & B
- D. They are found in earth
Explanation
Group 1 metals are called alkali metals because their oxides and hydroxides produce soluble alkaline solutions in water. Their oxides react with water to form hydroxides, and the hydroxides are generally water-soluble strong bases. Students may choose only a by focusing on basic oxides, but the term alkali emphasizes the soluble alkaline products.
Last updated
About Reactions of Group I Elements
Group I elements have one valence electron, so their reactivity increases down the group as ionisation energy decreases. Their reactions with water, oxygen, hydrogen and halogens produce hydroxides, oxides, hydrides and halides, while the behaviour of lithium differs from the heavier metals because of its small ionic size.
Practise s-Block and p-Block Elements
1,359 free s-Block and p-Block Elements MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemistry questions like this
Chemistry is on 12 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
A metal form strong base salts and stable carbonates. The metal is:
Alkali and alkaline earth metals impart colours when heated over the burner, it is due to?
Ammonia may be prepared by heating ammonium chloride with_______________?
Ammonia may be prepared by heating ammonium chloride with:
Carbonates of lithium are not stable like that of sodium due to________________?