The S-Block Elements
3 Board Chemistry previous year questions on The S-Block Elements — options free on every question; 1 include the answer & explanation free, the rest unlock with PYQ Pass.
Determine the type of oxide formed by an elements (A) which has smallest size among following:
Li, Na, K, Be, B, Mg
Memory Based Question 29/Jan/25 Evening shift
\({\mathrm{A}}_{2}{\mathrm{O}}_{3}\)
The element with the smallest size among Li, Na, K, Be, B, Mg is Boron (B).
Boron forms B2O3 which corresponds to the A2O3 type of oxide.
Correct answer: Option A
The correct order of melting points of the following salts is:
LiCl (I)
LiF (II)
LiBr (III)
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A s-block element \((M)\) reacts with oxygen to form an oxide of the formula \(MO _2\). The oxide is pale yellow in colour and paramagnetic. The element \((M)\) is:
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