From the data presented in the report sheet, you can deduce that the stoichiometric coefficient for oxygen is . H20 (1) --> H2 (g) + O2 (g)

The stoichiometric coefficient for oxygen is .

Explanation:

A number present on the front of an atom, ion or molecule in a chemical reaction equation is called a stoichiometric coefficient.

For example,

Here, the stoichiometric coefficient for is 1, for is 1 and for is .

Thus, we can conclude that the stoichiometric coefficient for oxygen is .

a electronegativity decreases beacuse the size of nucleus is bigger.