Question 25
the most widely used form of energy today in the usa is:
o coal
o petroleum
o nuclear
o water power

These models show the electron structures of two different nonmetal elements. which element is likely more reactive, and why? element 1 is more reactive because it has fewer electron shells and is toward the top of its group on the periodic table. element 1 is more reactive because it has more electrons in its valence shell and is farther to the right on the periodic table. element 2 is more reactive because it does not have a valence shell close to the nucleus, so it will attract electrons. element 2 is more reactive because it does not have a full valence shell, so it will attract electrons.

The difference between a red shift and a blue shift has to do with wavelength frequency. t or f

Gordon is going for a run through the park, but it is cold outside. the low outside temperature could affect his personal safety.