Answer:
option A
I think so good night sweet dreams
Answer: nn
Explanation:
The nanometre (international spelling as used by the International Bureau of Weights and Measures; SI symbol: nm) or nanometer (US spelling) is a unit of length in the metric system, equal to one billionth (short scale) of a metre (0.000000001 m).
It’s “c. +1” because the Sodium is losing a proton, which has a positive chage