-2. What is true about elements P, Q, R, and S?
V
W
X
Y
PQRS
A.
They are in the same period
B.
They are in the same group
C.
They are nonmetals
D.
They are gases

This is a mixture that has the same composition throughout.

Connect the whole numbers on the periodic table to indicate what they represent?

28. which is not a reason that water is used to store spent fuel rods from nuclear power plants? water increases the speed of the chain reaction in the fuel rods. water protects nuclear power plant workers from the high temperature and radiation of the fuel rods. water acts as a radiation shield to reduce the radiation levels. water cools the spent rods. salts action