FINAL CHEMISTRY FOR OHARMACY

Based on the (Hof data given, which compound is the most stable?

• N2O4(g), +9.7 kJ/mol

• H2S(g), -20.6 kJ/mol

• N2H4(g), +94.5 kJ/mol

• PH3(g), +5.4 kJ/mol

• NH3(g), -46.4 kJ/mol

Which ionic solid is likely to have the largest exothermic lattice energy?

• KCl

• NaCl

• LiCl

• CsCl

• They all have the same value.

Which of the following solids is likely to have the largest exothermic lattice energy?

• LiF

• NaCl

• AlCl3

• Al2O3

• CaCl2

Sodium forms a monatomic ion which has the electronic configuration of a noble gas. What is the electron configuration of that noble gas?

• 1s2

• 1s2 2p6

• 1s2 2s2 2p6

• 1s2 2s2 2p6 3s2

• 1s2 2s2 2p6 3s2 3p6

Bromine tends to form a monatomic ion which has the electronic configuration of a noble gas. What is the electron configuration of that noble gas?

• 1s2 2s2 2p6 3s2 3p6 3d10 4p6

• 1s2 2s2 2p6 3s2 3p6 4p6 4d10

• 1s2 2s2 2p6 3s2 3p6 4s2 4p6

• 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6

• 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10

The octet rule is generally followed for cations of which elements?

• post transition metals and transition metals

• Group IA and Group IIA metals

• Group IVA elements

• lanthanide elements

• actinide elements

Which ion of uranium has a noble gas configuration?

• U2+

• U3+

• U4+

• U6+

• U2

Which atom has the same electron configuration as In3+?

• Te

• Pd

• Ir

• Zn

• Ga

Give the ground state electron configuration and number of unpaired electrons for V3+.

• [Ar] 3d1; 2 unpaired electrons

• [Ar]; 1 unpaired electron

• [Ar] 3d2; 2 unpaired electrons

• [Ar] 3d3; 3 unpaired electrons

• [Ar] 3d4; 4 unpaired electrons

Which metal ion is expected to have the electron configuration, [Kr]4d4?

• Mn2+

• Ru2+

• Zr2+

• Mo2+

• Sr2+