Mass and weight are the 2 main characters of matter
Answer:
endothermic
Explanation:
Heat is added to make the process possible.
a) Number of protons = number of electron in the atom = atomic number
So it has 7 protons answer
N-3 has gained 3 electron so number of electrons + 7+3
= 10 answer
<span>NaCl is one and that is the only one that I know is for sure.
i hope this help!!!!!!!!!!</span>