Which one of the following is not true about the alkali metals? 

The electron-domain geometry of the AsF6- ion is octahedral. The hybrid orbitals used by the As atom for bonding are ________ orbitals

BONUS (OPTIONAL): What volume (mL) of fluorine gas is required to react with 1.28 g of calcium bromide to form calcium fluoride and bromine gas at STP?  Recall 1 mole =22.4L (gases) YOU MUST SHOW YOUR WORK FOR THIS PROBLEM  F2(g) + CaBr2 –>  CaF2 (aq) + Br2(g)

Based on the figure above, the boiling point of diethyl ether under an external pressure of 0.750 atm is ________ °C.

Which of the following does not have eight valence electrons?  

The ________ ion has a noble gas electron configuration. 

The Lewis structure of AsH3 shows ________ nonbonding electron pair(s) on As.

A sample of gas originally at 25 °C and 1.00 atm pressure in a 2.5 L container is subject to a pressure of 0.85 atm and a temperature of 15 °C. The final volume of the gas is ________ L. YOU MUST SHOW YOUR WORK FOR THIS PROBLEM

What are the respective concentrations (M) of Fe3+ and I- afforded by dissolving 0.200 mol FeI3 in water and diluting to 725 mL? YOU MUST SHOW YOUR WORK FOR THIS PROBLEM

Arrange the following gases in order of increasing average molecular speed at 25 °C.                                           He, O2, CO2, N2