Question

. An element X is monovalent and another element Y is trivalent. the compound formed by these two elements will be​

Answer 1

Answer:

X3Y

Explanation:

by criss cross method

x is monovalent so : x ^1

y is trivalent so : Y^3

compound formed is X3Y

Answer 2

Answer:

The compound formed by these element X and Y will be  X₃Y.​

Explanation:

We have given that element X is monovalent. The valency of X is 1.

The other element Y is trivalent.  So, valency of element Y will be 3.

Valency of an element can be determined by calculating the number of electrons present in the valence shell of the element.

To find the empirical formula formed by the X and Y, we use criss cross method in which the valency of one element becomes the subscript of other element. This goes for both elements.

Therefore, the empirical formula of compound will be X₃Y₁.