Which pair of elements would have the same number of valence electrons, in their neutral atoms?

a. lithium and beryllium
b. silicon and chlorine
c. germanium and lead
d. bromine and krypton

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.

(b) which contains higher levels of vitamin b, oranges or spinach?

explanation:

you can eliminate a, c, and d because they are questions based on opinions.

how important do you think an instrument is to the musician who plays it?