The Balanced chemical equation for above reaction will be :

The Coefficients will be :
So, Correct option is :
A. 3, 1, 1, 3
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5. A
this is the answer check it out
Answer:
not a reason? if you ask a reason ,i can say An actual yield is the mass of a product actually obtained from the reaction. It is usually less than the theoretical yield. The reasons for this include:
-->incomplete reactions, in which some of the reactants do not react to form the product
practical losses during the experiment
->side reactions (unwanted reactions that compete with the desired reaction)
->reversible reactions
->impurities in reactants
but you asked for not reason then it can be anything lul, like balanced chemical equation, rate of reaction and etc etc ✌️;)
I would say false hope that helped
Assuming you meant cation and not action, gallium would most likely form a cation because it is a group A element