Answer:
hydroxide is the one because it is the one HAHAH
Answer:
The answer is O-H.
Explanation:
This is because when you subtract their EN values you get 1.4, and that is in the range of the polar covalent bond values.
Explanation:
Mg+NaF. NaF+Mg
are use sure about the question
Answer: 
Explanation: A double displacement reaction is one in which exchange of ions take place.
According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

Answer is 16
carbon valence = 4
oxygen valence = 6 but carbon dioxide have 2 oxygen so = 12
12 + 4 = 16
so carbon dioxide have 16 electron