The name is Potassium bromide.
I believe the answer is: in order not to write very big or very small number values
Answer:
(C) Oxygen because it has the strongest attractive force and the largest
electronegativity
Explanation:
Oxygen will be most reactive
configuration = 
As oxygen need only two electrons to complete its octet.
Oxygen will have stronger force than nitrogen as it will tend to pull electrons more to complete its octet. Also along the period electronegativity increases so oxygen has higher electronegativity than nitrogen
It’s the doubles I think not sure let me know if it’s true
Carbon-16 has 10 Neutrons.