The periodic table organizes elements according to INCREASING A)
atomic mass.
B)
energy level
C)
atomic number
D)
valence number

C)

atomic number

Explanation:

C)

atomic number is also the number of protons an atom has and this number will never change unlike number of neutrons or electrons.

hey there!

boiling point is the temperature at which the vapor pressure of the liquid equals atmospheric pressure. the vapor pressure of solvent molecules is decreased when a solute is added, so a higher temperature is required to increase the number of solvent molecules in the gas phase above the liquid.

at the freezing point, the vapor pressures of the solid and liquid are equal; a lower temperature is needed to reduce the number of solvent particles above the liquid.

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tobey

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