An element has six valence electrons available for bonding. Which group of the periodic table does this element most likely belong to? group 2
group 4
group 16
group 18

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.