Which group on the periodic table will give 1 electron when forming an ionic bond? Which group will always take two electrons when forming an ionic compound?
Which group would form a 1:1 ratio with Oxygen?
Which group has a variable amount of valence electrons?
Which group would form a 3:1 ratio with sodium (Na)?

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.

the answer is 0.8m.

by: nicholas