Mass number= atomic number + number of neutrons.
A=Z+N
Z=number of protons=12
N=12
A=12+12=24
If, we have 12 protons and 10 electrons, the charge of this ion is +2
Therefore: mass number:24; charge: +2
Answer: a. mass number: 24; charge: +2
Answer:
D. chemical alters the atomic structure of a substance, while physical does not
hope this helps!
Because they create their own food, they are considered as producers.
Answer:
https://www.webassign.net/question_assets/wertzcams3/appendix.pdf