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Classification of Elements and Periodicity in Properties

398 Questions Start Errorless Test
All Exams Errorless Allen
CPMT 2004; RPMT 2006 Q151 Errorless 3. Ionisation Energy MCQ
Which among the following elements have lowest value of $IE_{1}$
A.
$Pb$
B.
$Sn$
C.
$Si$
D.
$C$
Kerala PMT 2004; WB JEE 2008 Q152 Errorless 3. Ionisation Energy MCQ
In a given shell, the order of screening effect is
A.
s > p > d > f
B.
f > d > p > s
C.
p < d < s < f
D.
d > f < s > p
E.
f > p > s > d
AIEEE 2004 Q153 Errorless 3. Ionisation Energy MCQ
The formation of the oxide ion $O_{(g)}^{2-}$ requires first an exothermic and then an endothermic step as shown below $O_{(g)} + e^{-} = O_{(g)}^{-}\Delta H^{o} = -142\ kJmol^{-1}$ $O_{(g)}^{-} + e^{-} = O_{(g)}^{2-}\Delta H^{o} = 844\ kJmol^{-1}$ This is because
A.
$O^{-}$ ion will tend to resist the addition of another electron
B.
Oxygen has high electron affinity
C.
Oxygen is more electronegative
D.
$O^{-}$ ion has comparatively larger size than oxygen atom
AIEEE 2004 Q154 Errorless 4. Electron affinity MCQ
Which among the following factors is the most important in making fluorine the strongest oxidizing halogen
A.
Hydration enthalpy
B.
Ionisation enthalpy
C.
Electron affinity
D.
Bond dissociation energy
AFMC 2004 Q155 Errorless 5. Electronegativity MCQ
Which of these have no unit
A.
Electronegativity
B.
Electron affinity
C.
Ionisation energy
D.
Excitation potential
AIEEE 2004 Q156 Errorless 5. Electronegativity MCQ
Among $Al_{2}O_{3}, SiO_{2}, P_{2}O_{3}$ and $SO_{2}$ the correct order of acid strength is
A.
$Al_{2}O_{3} < SiO_{2} < SO_{2} < P_{2}O_{3}$
B.
$SiO_{2} < SO_{2} < Al_{2}O_{3} < P_{2}O_{3}$
C.
$SO_{2} < P_{2}O_{3} < SiO_{2} < Al_{2}O_{3}$
D.
$Al_{2}O_{3} < SiO_{2} < P_{2}O_{3} < SO_{2}$
AIEEE 2004 Q157 Errorless 6. Valency and oxidation state MCQ
Beryllium and aluminium exhibit many properties which are similar. But, the two elements differ in
A.
Forming covalent halides
B.
Forming polymeric hydrides
C.
Exhibiting maximum covalency in compounds
D.
Exhibiting amphoteric nature in their oxides
BHU 2004 Q158 Errorless 7. Critical Thinking MCQ
Which of the following statement is correct with respect to the property of elements with an increase in atomic number in the carbon family (group 14)
A.
Atomic size decrease
B.
Ionisation energy increase
C.
Metallic character decrease
D.
Stability of $+2$ oxidation state increase
KCET 2003; MP PMT 2003; Odisha JEE 2010 Q159 Errorless 1. Extended or long form of periodic table MCQ
Which of the following show diagonal relationship
A.
B and Si
B.
B and Al
C.
B and Ga
D.
B and C
MP PMT 2003 Q160 Errorless 1. Extended or long form of periodic table MCQ
On going left to right in a period, in transition metals, their atomic volumes
A.
Decrease
B.
Increase
C.
Remain same
D.
None of these
AIEEE 2003 Q161 Errorless 1. Extended or long form of periodic table MCQ
According to the periodic law of elements, the variation in properties of elements is related to their
A.
Atomic masses
B.
Nuclear masses
C.
Atomic numbers
D.
Nuclear neutron-proton number
KCET 2003 Q162 Errorless 1. Extended or long form of periodic table MCQ
The element with atomic number 36 belongs to ..... block in the periodic table
A.
$p$
B.
$s$
C.
$f$
D.
$d$
CBSE PMI 2003, 04 Q163 Errorless 2. Atomic and Ionic radii MCQ
Ionic radii are
A.
Directly proportional to effective nuclear charge
B.
Directly proportional to square of effective nuclear charge
C.
Inversely proportional to effective nuclear charge
D.
Inversely proportional to square of effective nuclear charge
MP PMT 2003; BHU 2003 Q164 Errorless 3. Ionisation Energy MCQ
Correct order of polarising power is
A.
$Cs^{+} < K^{+} < Mg^{2+} < Al^{3+}$
B.
$K^{+} < Cs^{+} < Mg^{2+} < Al^{3+}$
C.
$Cs^{+} < K^{+} < Al^{3+} < Mg^{2+}$
D.
$K^{+} < Cs^{+} < Al^{3+} < Mg^{2+}$
Pb. CET 2003 Q165 Errorless 4. Electron affinity MCQ
Which of the following properties show gradual decrease with increase in atomic number across a period in the periodic table
A.
Electron affinity
B.
Ionisation potential
C.
Electronegativity
D.
Size of atom
EAMCET 2003 Q166 Errorless 4. Electron affinity MCQ
The electron affinity values (in $kJ \, mol^{-1}$ ) of three halogens X,Y and Z are respectively -349, -333 and -325. Then X,Y and Z are respectively
A.
$F_2, Cl_2$ and $Br_2$
B.
$Cl_2, F_2$ and $Br_2$
C.
$Cl_2, Br_2$ and $F_2$
D.
$Br_2, Cl_2$ and $F_2$
Kerala PMT 2003 Q167 Errorless 5. Electronegativity MCQ
An atom with high electronegativity has
A.
Large size
B.
High ionisation potential
C.
Low electron affinity
D.
Low ionisation potential
MP PMT 2003 Q168 Errorless 5. Electronegativity MCQ
With respect to chlorine, hydrogen will be
A.
Electropositive
B.
Electronegative
C.
Neutral
D.
None of the above
AIEEE 2003 Q169 Errorless 5. Electronegativity MCQ
The solubilities of carbonates decreases down the magnesium group due to a decrease in
A.
Lattice energies of solids
B.
Hydration energies of cations
C.
Inter-ionic attraction
D.
Entropy of solution formation
DCE 2003 Q170 Errorless 5. Electronegativity MCQ
The polarising ability of which one of the following is highest
A.
Small highly +ve ion
B.
Large +ve ion
C.
Small highly -ve ion
D.
Large -ve ion
Kerala PMT 2003 Q171 Errorless 6. Valency and oxidation state MCQ
In any period the valency of an element with respect to oxygen
A.
Increases one by one from IA to VIIA
B.
Decreases one by one from IA to VIIA
C.
Increases one by one from IA to IVA and then decreases from VA to VIIA one by one
D.
Decreases one by one from IA to IVA and then increases from VA to VIIA one by one
UPSEAT 2003 Q172 Errorless 6. Valency and oxidation state MCQ
Which will show maximum non-metallic character
A.
B
B.
Be
C.
Mg
D.
Al
RPET 2003 Q173 Errorless 7. Critical Thinking MCQ
Increasing order of electronegativity is
A.
Bi < P < S < Cl
B.
P < Bi < S < Cl
C.
S < Bi < P < Cl
D.
Cl < S < Bi < P
CBSE PMT 2002 Q174 Errorless 1. Extended or long form of periodic table MCQ
If an atom has electronic configuration $1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}3d^{3}4s^{2}$ , it will be placed in
A.
Second group
B.
Third group
C.
Fifth group
D.
Sixth group
AMU 2002 Q175 Errorless 1. Extended or long form of periodic table MCQ
Which of the following has smallest bond angle
A.
$H_{2}O$
B.
$NH_{3}$
C.
$CH_{4}$
D.
$CO_{2}$