Answer:
I think it's B
Explanation:
I dont have much experience with the periodic table, but I just think its B.
Answer:
last one
Explanation:
The elements classified as metalloids are boron, silicon, germanium, arsenic, antimony, tellurium, and polonium.
PH = -log [H+]
pH = -log (1.0x10^-4) = -(-4) = 4 or A
