Order the bond angles of the molecules or ions from smallest to largest: o3+, o3, o3-

The bond angles of the molecules or ions from smallest to largest:

O3- , O3 , O3+

Explanation:

O3- has the smallest bond angle because the added electron makes two places for electron repulsion as it allocates time on the central O.

O3 has lowering bond angle because at O3 appearance of alone pair over oxygen it will experience contracting so it may cause lowering bond angle.

O3+ has a lower electronegativity so it has a higher bond angle. Electronegativity is the tendency of an atom to attract a shared pair of the electron. so electronegativity decreases than bond angle increase so O3 has higher electronegativity so it has lowering bond angle than O3+.

as given the equation is

2al + 6 hcl > 2 alcl3 + 3 h2(g)

as per equation two moles of aluminum reacts with six moles of hcl to give two moles of alcl3 and three moles of hydrogen gas

given: three moles of al are present and 7 moles of hcl

for three moles of aluminum nine moles of hcl will be required

however as 7 moles of hcl are present so the limiting reagent is hcl

hcl is going to decide the number of moles of product formed

when six moles of hcl are present = 3 moles of h2 are formed

when one mole of hcl is present == 3/6 mole sof h2 will be formed

when 7 moles of hcl are present = 3 x 7/ 6 moles of h2 will be formed = 3.5 moles of h2