Explanation:
E maybe i am not sure or C
Most of the elements in the periodic table are METALS........
Answer: D) An Mg atom donates one electron to each of the two Cl atoms.
Explanation: Ionic compound is formed by transfer of electrons from metal to non metal.
For formation of a neutral ionic compound, the charges on cation and anion must be balanced. The cation is formed by loss of electrons by metals and anions are formed by gain of electrons by non metals.
Here magnesium is metal with atomic number 12 and chlorine is a non metal with atomic number of 17.




Thus magnesium loses two electrons to form
and chlorine atoms gain one electron each to form 
Thus the compound formed is
.
Answer:
The answer is "
".
Explanation:
Using formula:

1 U atom produces 1 Pb atom after decay.
U's original numbers are now the sum of U counts and Pb counts.

