Answer:
the valency of oxygen is -2
Centi- (symbol c) is a unit prefix in the metric system denoting a factor of one hundredth.
Answer:
Average atomic mass = 6.6575.
Explanation:
As fractions the abundance is 1/4 and 3/4.
The average atomic mass = (5.03 + 3(7.20) / 4
= 6.6575.
Answer:
A.
Iron, Fe
explanation:
Iron reduces silver nitrate to silver.