describe the general trend in electronegativity as metals in group 2 on the periodic table are concidered in order of increasing atomic number

Electronegativity decrease in group from top to bottom

Explanation:

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.