Consider the following neutral electron configurations in which n has a constant value. which configuration would belong to the element with the most negative electron affinity, ?
a. 2s²
b. 2s² 2p²
c. 2s² 2p⁵
d. 2s² 2p⁶

C

Explanation:

The most negative electron affinity is observed for the group that has the has the greatest ability to accommodate an electron forming a negative ion. The best in this regard are elements of group 17.

law of conservation of matter

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.