If they are in the same row they have the same number of outer electrons on the same main shell also known as valence electrons
if they are in the same column they have the same number of valence electrons but on different main shells
Answer:
0.25
Explanation:
volume= number of moles over concentration
hence v=1.5/6
At room temperature the air is Gas
Answer:
First oil well in the United States, built in 1859 by Edwin L. Drake, Titusville, Pennsylvania.
I would say A and D. A is right for sure, as for D, I'm not so sure. Hope this helps!