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Classification of Elements and Periodicity in Properties

571 Questions Start Errorless Test
All Exams Errorless Allen
MP PET 2000 Q201 Errorless Extended or long form of periodic table MCQ
From which of the following the hydration energy of $Mg^{2+}$ is larger
A.
$Na^{+}$
B.
$Al^{3+}$
C.
$Be^{2+}$
D.
$Cr^{3+}$
RPMT 2000 Q202 Errorless Extended or long form of periodic table MCQ
The screening effect of $d$ -electrons is
A.
Equal to that of $p$ -electrons
B.
More than that of $p$ -electrons
C.
Same as $f$ -electrons
D.
Less than $p$ -electrons
RPMT 2000 Q203 Errorless Extended or long form of periodic table MCQ
Hydrogen can be put in halogen group because
A.
It has deuterium and tritium as isotopes
B.
It forms hydrides like chlorides
C.
It contains one electron only
D.
It is light
RPET 2000 Q204 Errorless Extended or long form of periodic table MCQ
Highest density is of ......
A.
Ir
B.
Os
C.
Pb
D.
Hg
RPET 2000 Q205 Errorless Extended or long form of periodic table MCQ
Under normal condition which of the following electronic configuration is able to form dipositive ion
A.
$[Ar]4s^{1}$
B.
$[Ne]2s^{2}3p^{6}$
C.
$[Ne]3s^{2}$
D.
None of these
RPET 2000 Q206 Errorless Extended or long form of periodic table MCQ
Astatine is a
A.
Halogen
B.
Rare earth element
C.
Alkaline earth metal
D.
None of these
JIPMER 2000 Q207 Errorless Extended or long form of periodic table MCQ
Which set has the same number of unpaired electrons in their ground state
A.
$Cl^{-}, Fe^{3+}, Cr^{3+}$
B.
$Na^{+}, Mg^{2+}, Al$
C.
$Na, P, Cl$
D.
$N, P, V$
MP PET 2000 Q208 Errorless Atomic and Ionic radii MCQ
Which one of the following should be most stable
A.
$H_{2}^{+}$
B.
$H^{+}$
C.
$H$
D.
$H^{-}$
AIIMS 2000; MP PMT 2002 Q209 Errorless Ionisation Energy MCQ
Among the following options, the sequence of increasing first ionisation potential will be
A.
B < C < N
B.
B > C > N
C.
C < B < N
D.
N > C > B
BHU 2000; MH CET 2003 Q210 Errorless Ionisation Energy MCQ
The correct order of reactivity of halogens is
A.
$F > Cl > Br > I$
B.
$F < Cl > Br < I$
C.
$F < Cl < Br < I$
D.
$F < Cl < Br > I$
CPMT 2000 Q211 Errorless Ionisation Energy MCQ
The first ionisation potential will be maximum for
A.
Lithium
B.
Hydrogen
C.
Uranium
D.
Iron
RPMT 2000 Q212 Errorless Ionisation Energy MCQ
Highest energy will be absorbed to eject out the electron in the configuration
A.
$1s^{2}2s^{2}2p^{1}$
B.
$1s^{2}2s^{2}2p^{3}$
C.
$1s^{2}2s^{2}2p^{2}$
D.
$1s^{2}2s^{2}2p^{4}$
RPET 2000 Q213 Errorless Ionisation Energy MCQ
In which of the following process highest energy is absorbed
A.
$Cu \rightarrow Cu^{+}$
B.
$Br \rightarrow Br^{-}$
C.
$I \rightarrow I^{-}$
D.
$Li \rightarrow Li^{+}$
AFMC 2000 Q214 Errorless Electron affinity MCQ
Which of the following has the least electron affinity in $kJmol^{-1}$
A.
Oxygen
B.
Carbon
C.
Nitrogen
D.
Boron
MP PMT 2000 Q215 Errorless Electronegativity MCQ
Going from fluorine to chlorine, bromine and iodine, the electronegativity
A.
Increases
B.
Decreases
C.
First decreases then increases
D.
Changes randomly
AMU 2000 Q216 Errorless Valency and oxidation state MCQ
Which of the following sequence correctly represents the decreasing acid nature of oxides
A.
$Li_{2}O > BeO > B_{2}O_{3} > CO_{2} > N_{2}O_{3}$
B.
$N_{2}O_{3} > CO_{2} > B_{2}O_{3} > BeO > Li_{2}O$
C.
$CO_{2} > N_{2}O_{3} > B_{2}O_{3} > BeO > Li_{2}O$
D.
$B_{2}O_{3} > CO_{2} > N_{2}O_{3} > Li_{2}O > BeO$
MP PMT 2000 Q217 Errorless Valency and oxidation state MCQ
The halogen that is most easily reduced is
A.
$F_{2}$
B.
$Cl_{2}$
C.
$Br_{2}$
D.
$I_{2}$
MP PET 2000 Q218 Errorless Valency and oxidation state MCQ
The correct order of the increasing ionic character is
A.
$BeCl_{2} < MgCl_{2} < CaCl_{2} < BaCl_{2}$
B.
$BeCl_{2} < MgCl_{2} < BaCl_{2} > CaCl_{2}$
C.
$BeCl_{2} < BaCl_{2} < MgCl_{2} < CaCl_{2}$
D.
$BaCl_{2} < CaCl_{2} < MgCl_{2} < BeCl_{2}$
CBSE PMT 2000 Q219 Errorless Critical Thinking MCQ
The elements which occupy the peaks of ionisation energy curve, are
A.
$Na, K, Rb, Cs$
B.
$Na, Mg, Cl, I$
C.
$Cl, Br, I, F$
D.
$He, Ne, Ar, Kr$
RPMT 2000 Q220 Errorless Critical Thinking MCQ
Which of the following is not the correct increasing order of ionisation energy
A.
$Cl^{-} < Ar < K^{+}$
B.
$Au < Ag < Cu$
C.
$Cs < Rb < K$
D.
$K < Ca < Sc$
DCE 2000 Q221 Errorless Critical Thinking MCQ
In which block $106^{th}$ element belongs
A.
s - block
B.
p - block
C.
d - block
D.
f - block
IIT 2000 Q222 Errorless Critical Thinking MCQ
The correct order of radii is
A.
N < Be < B
B.
$F^{-} < O^{2-} < N^{3-}$
C.
Na < Li < K
D.
$Fe^{3+} < Fe^{2+} < Fe^{4+}$
IIT 2000 Q223 Errorless Critical Thinking MCQ
The correct order of acidic strength is
A.
$Cl_{2}O_{7} > SO_{2} > P_{4}O_{10}$
B.
$CO_{2} > N_{2}O_{5} > SO_{3}$
C.
$Na_{2}O > MgO > Al_{2}O_{3}$
D.
$K_{2}O > CaO > MgO$
IIT 2000 Q224 Errorless Critical Thinking MCQ
Amongst $H_{2}O$ , $H_{2}S$ , $H_{2}Se$ and $H_{2}Te$ , the one with the highest boiling point is
A.
$H_{2}O$ because of hydrogen bonding
B.
$H_{2}Te$ because of higher molecular weight
C.
$H_{2}S$ because of hydrogen bonding
D.
$H_{2}Se$ because of lower molecular weight
IIT 2000 Q225 Errorless Critical Thinking MCQ
Read the following statement and explanation and answer as per the options given below; Assertion : The first ionization energy of Be is greater than that of B Reason : 2p-orbital is lower in energy than 2s
A.
If both assertion and reason are true and the reason is the correct explanation of the assertion.
B.
If both assertion and reason are true but reason is not the correct explanation of the assertion.
C.
If assertion is true but reason is false.
D.
If the assertion and reason both are false.
E.
If assertion is false but reason is true.