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F
T
Water would boil at a lower temperature on the moon.
107. Element Z with an electronic
BECAUSE
each atom of Z needs two electrons
configuration of 1s
2
2s
2
2p
5
can be
to fill its valence shell. expected to
form the compound MgZ
2
T
F
Element Z needs only one electron to fill its outer orbital.

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Chemistry Subject Test
299
ARCO
■ SAT II Subject Tests
w w w . p e t e r s o n s . c o m / a r c o
108. A reaction with a positive enthalpy
BECAUSE
the Gibbs free energy for a spontaneous
and a negative entropy will be
reaction is negative.
spontaneous
F
T
A reaction with positive enthalpy and a negative entropy will always be nonspontaneous.
109. Sodium has a larger atomic radius
BECAUSE
sodium is lighter than phosphorous.
than phosphorous
T
F
Phosphorous has a smaller atomic radius because the increase in nuclear charge for electrons filling the
same energy level pulls the orbiting electrons closer to the nucleus.
110. The f subshell contains seven orbitals
BECAUSE
the f subshell is defined by the
secondary quantum number 3.
T
T
CE
Both statements are true and statement II is the correct explanation of statement I.
111. The 5s orbital is filled after the 4d
BECAUSE
the 5s orbital has a lower energy than
orbital
the 4d orbital.
F
T
5s is filled before 4d.
112. Under the conditions of low pressure
BECAUSE
the deviation from the ideal gas law
and high temperature, the ideal gas
is due to the nonnegligible volume of
laws are inaccurate
the molecules and the interactions
between molecules.