Magnesium and silicon
the have a high electronegativity difference compared to the others
<span>The answer is A. The troposphere layer has the greatest air pressure because it is the layer that is closest to the Earth and air pressure is greatest near the surface of the Earth.
Hope that helps. :) </span>
Answer:
Lithium
Explanation:
It is group I, not group 0.
D, how hard the students try on the SAT seems the most reasonable.
