Answer:
C contains one N and three I atoms
Answer: The noble gases are the chemical elements in group 18 of the periodic table. They are the most stable due to having the maximum number of valence electrons their outer shell can hold. Therefore, they rarely react with other elements since they are already stable.
Explanation:
Answer:
Group 1: LiOH, NaOH, KOH
Group 2: Ca(OH)2, Sr(OH)2, Ba(OH)2
Explanation:
When we take a look at the periodic table of elements we can see that Fluoride has the atomic number of 9. What this means is that this atom has 9 protons and 9 electrons. Since the fluorine ion has a negative charge of one, that means that the fluorine ion has one more electron than the fluorine atom.
So, the F- ion has 9 protons and 10 electrons.