Find sulfur s and magnesium mg on the periodictable below how many electrons are in the outer shell of each of these 2 elements

there is not enough info to determine the answer
sulfer has 16 mag 12
sulfer 3, mag 3
sulfer 6 mag 2

Option (d) is the correct answer.

Explanation:

According to the periodic table, both magnesium and sulfur belongs to third period.

It is known that atomic number is the number of protons present in an atom.

Also, it is known that when an atom is neutral then number of protons equal the number of electrons.

So, atomic number of magnesium is 12, that is, electronic configuration of magnesium is 2, 8, 2. Whereas atomic number of sulfur is 16, that is, electronic configuration of sulfur is 2, 8, 6.

Thus, we can conclude that in the outer shell magnesium has 2 electrons and sulfur has 6 electrons.

answer is: c. the experiment shows that the red substance experienced a chemical change.

this is chemical change (chemical reaction), because two new substances are formed (metalig liquid and gas), the atoms are rearranged and the reaction is followed by an energy change.

this is example of chemical decomposition.

chemical decomposition (analysis) is the separation of a single chemical compound into its two or more elemental parts or to simpler compounds.  

chemical decomposition is opposite of chemical synthesis.