In the reactants there is a curvy arrow, what does the direction of the arrow indicate?
a. because cations are sharp and anions are dull
b. because the anions and cations share electrons
c. because the cations give away an electron and the anions accept electrons

Option C.

Because the cations give away an electron and the anions accept electrons

Option (C) is the correct answer.

Explanation:

When a curvy arrow is placed on the reactants then it shows that an electron is being transferred from one atom to another.

And, it is known that when donation or transfer of an electron occurs from one atom to another then it results in the formation of an ionic bond and the compound formed is known as ionic compound.

For example, sodium when chemically combines with chlorine atom then one valence electron is donated by sodium atom to the chlorine atom. This forms the ionic compound NaCl.

Thus, we can conclude that in the reactants there is a curvy arrow,  the direction of the arrow indicate that the cations give away an electron and the anions accept electrons.

acid rain does not usually kill trees directly. instead, it is more likely to weaken the trees by damaging their leaves, limiting the nutrients available to them, or poisoning them with toxic substances slowly released from the soil. the main atmospheric pollutants that affect trees are nitrates and sulphates.

a electronegativity decreases beacuse the size of nucleus is bigger.