Your answer is C forms of the same element that differ in the number of neutrons in each atom because if the number of neutrons change the whole element changes.
Both carbon and lead belong to Group IV elements, and thus they have the same number of valence electrons.
<span>In each of the other options, the two elements belong to different groups, and thus they do NOT have the same number of valence electrons.</span>
I can’t see it can your turn it a bit?
Answer:
This is and ADDITION REACTION
Explanation:
Because your putting a compound and an element together