Which pair of elements is most likely to react to form a covalently bonded species?

 

Question 1

Which pair of elements is most likely to react to form a covalently bonded species? P and O, Ca and O, K and S, Zn and Cl.

Question 2

What is the net ionic equation for the balanced chemical reaction below. BaCl2(aq)   +   Na2SO4(aq)   →   2NaCl(aq)   + BaSO4(s)

Question 3

Which is expected to have the most negative standard enthalpy of formation? H2(g), O2(g), H2O(g), H2O(l)

Question 4

Element X has these ionization energies: Ionization     Energy (kJ/mole) First          419 Second         3051 Third          4411 Element X most likely is

Question 5

The formula of sodium vanadate is Na3VO4 and that of calcium chloride is MgCl2. What is the formula of magnesium vanadate?

Question 6

The correct name for N2O5 is

Question 7

Element X has these ionization energies: Ionization Energy First  496 kJ/mol Second 4562 kJ/mol Third  6912 kJ/mol Element X most likely is

Question 8

Which of the following aqueous solutions exhibit the lowest freezing point per mole basis? NaCl, MgCl2, MgSO4, FeCl3

Question 9

Which chloride should exhibit the most covalent type of bond? BeCl2, NaCl, KCl, CaCl2, BaCl2

Question 10

Which one of the following hydrides exhibit the highest boiling point? SbH3, NH3, PH3, AsH3

 

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