A)
arrange the following in order of increasing first ionization
energy: Na, Cl, Al, S, and Cs.
B) the first and second ionization energies of K are 419
kJ/mol and 3052 kJ/mol, and those of Ca are 590 kJ/mol and 1145
kJ/mol, respectively. Compare their values and comment on the
differences.
Arrange the following in the order of their increasing
effective nuclear charge, increasing ionization potential and
increasing size. Give appropriate reasons to support your
arrangement. (X is an element)
X, X−,
X2−, X+,
X2+
You have two reactions associated with the elements X and
Y:
X(g) + e →
X−(g)…..(i)
Y(g) + e →
Y−(g)…..(ii)
A certain amount of energy is released
in both reactions. If addition of an electron to the valence shell
of Y(g) was easier than to...
Part A
Arrange the elements in order of increasing first ionization
energy: Si, F, Sn, O.
Rank elements from smallest to largest. To rank items as
equivalent, overlap them.
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Si
F
Sn
O
Smallest
Largest
The correct ranking cannot be determined.
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Part B
Arrange the isoelectronic series in order of decreasing radius:
Cl−, K+, S2−, Ca2+.
Rank ions from largest to smallest. To rank items as equivalent,
overlap them.
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K+
Ca2+
S2−
Cl−...
Based on the molecular interactions, arrange the following
hydrocarbons in the increasing order of their boiling points. Which
of them will have maximum retention time in the gas
chromatograph:
Benzene (C6H6), toluene (C6H6-CH3), Xylene (C6H4-(CH3)2)
Arrange the following isoelectronic ions in the increasing order
of their ionic size. Give their correct electron configuration. Use
Zeff as a tool to explain the trend in their ionic size. O 2- , F-
, Na+ , Mg2+, Al3+. Ionic radii for the same ions are given in the
text
Arrange the following compounds in order of increasing acidity,
and explain the reasons for your choice of order: cyclopentanol,
phenol, p-nitrophenol, and 2- chlorocyclopentanol.
An electromagnatic wave is traveling in vacuum with frequency
6.5 x 1014 Hz. The wave has average total energy density
of 4.6 x 10-6 J/m3.
(a) What is the speed of this wave?
(b) What is the wavelength of this wave?
(c) What is the maximum electric field of this wave?
(d) What is the rms magnetic field of this wave?
(e) How much energy does a 2 m2 flat surface
(perpendicular to the wave propagation direction) receive in 8...