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BITSAT 2014

Exam: BITSAT
Year: 2014
Subject: Chemistry
Chapter: Classification of Elements and Periodicity in Properties

BITSAT 2014 · Chemistry · Classification of Elements and Periodicity in Properties

The valency shell of element A contains 3 electrons while the...

The valency shell of element A contains 3 electrons while the valency shell of element

\mathrm{B}

contains 6 electrons. If A combines with

\mathrm{B}

, the probable formula of the compound formed will be

Options

A $\mathrm{AB}_{2}$
B $A_{2} B$
C $\mathrm{A}_{2} \mathrm{ B}_{3}$
D $\mathrm{A}_{3} \mathrm{ B}_{2}$

Correct answer

C. $\mathrm{A}_{2} \mathrm{ B}_{3}$

Step-by-step solution

The element A is

\mathrm{ns}^{2} p^{1}

and

\mathrm{B}

is

\mathrm{ns}^{2} p^{4}

. They can form compound of the type

\mathrm{A}_{2} \mathrm{ B}_{3}

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