I've got a balanced equation that is asking about and i have no idea where to start. i will attach the question below: 4a + 3b2 -> 2a2b3 if 12 moles of a are reacted with excess b2, how many moles of a2b3 will be produced?

6 mol of A₂B₃ are produced

Explanation:

This is the reaction:

4A  + 3B₂  →  2A₂B₃

4 moles of A react with 3 moles of B to produce 2 moles of A₂B₃.

Ratio is 4:2. Therefore:

4 moles of A will produce 2 moles of A₂B₃

12 moles of A, would produce (12 .2) / 4 = 6 moles

the seeing the electronic configuration we can say that the element is fluorine.

fluorine is the most electronegative element in the periodic table.

but by only seeing the configuration we cannot say about its reactivity because we don't know if its configuration after excitation or by addition of electrons.

but if not then, it is the lightest halogen and exists as a highly toxic pale yellow diatomic gas at standard conditions. as the most electronegative element, it is extremely reactive: almost all other elements, including some noble gases, form compounds with fluorine.