Two atoms of X combine with three atoms of Y to form $X_{2} Y_{3}$

From the chemical formula, it can be concluded that the valency of X and Y is _ and __ respectively.

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Solution

$X_{2} Y_{3}$
$X_{b} Y_{a}$
On comparing with $X_{2} Y_{3}$ , Valency of X(a) = 3 Y(b)=2

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Q. Statement I: Two atoms of X combine with three atoms of Y to form

X_{2} Y_{3}

.

Statement II: From the chemical formula of the compound

X_{2} Y_{3}

, we can conclude that the valency of X is 2.

Subscripts in the chemical formula $A_{2} B_{3}$ denotes:

(i) 2 atoms of A combine with 3 atoms of B to form $A_{2} B_{3}$

(ii) The subscript 2 denotes that valency of A is 2.

Subscripts in the chemical formula X₂Y₃denotes:

A. 2 atoms of X combine with 3 atoms of Y to form X₂Y₃

B. The subscript 2 denotes that valency of X is 2.

Subscripts in the chemical formula X₂Y₃denotes:

A. 2 atoms of X combine with 3 atoms of Y to form X₂Y₃

B.The subscript 2 denotes that valency of X is 2.

Statement 1: An atom of valency 2 can combine with 2 other atoms of valency 1.
Statement 2: To write the chemical formula, one must know the valency of the element.

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Two atoms of X combine with three atoms of Y to formX2Y3 From the chemical formula, it can be concluded that the valency of X and Y is ___ and ____ respectively.

X2Y3 Xb Ya On comparing with X2Y3 , Valency of X(a) = 3 Y(b)=2

Two atoms of X combine with three atoms of Y to form $X_{2} Y_{3}$

From the chemical formula, it can be concluded that the valency of X and Y is _ and __ respectively.

$X_{2} Y_{3}$
$X_{b} Y_{a}$
On comparing with $X_{2} Y_{3}$ , Valency of X(a) = 3 Y(b)=2