What element has the electron configuration 1s22s22p63523p64523d4? A. Chromium (Cr)
B. Magnesium (Mg)
C. Manganese (Mn)
D. Iron (Fe)

Explanation:

It's none of these.

Cr- 1s2 2s2 2p6 3s2 3p6 4s1 3d5

Mg- 1s2 2s2 2p6 3s2

Mn - 1s2 2s2 2p6 3s2 3p6 4s2 3d5

Fe- 1s2 2s2 2p6 3s2 3p6 4s2 3d6

I think there's a mistake in the question.

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.

hope this you

tobey