← Back to Chemistry-I

Classification of Elements and Periodicity in Properties

301 Questions Start Errorless Test
All Exams Errorless
AIEEE 2002 Q151 Errorless Critical Thinking MCQ
Which is the correct order of ionic sizes (At. no.: Ce = 58, Sn = 50, Yb = 70 and Lu = 71)
A.
Ce > Sn > Yb > Lu
B.
Sn > Ce > Lu > Yb
C.
Lu > Yb > Sn > Ce
D.
Sn > Yb > Ce > Lu
CBSE PMT 2001 Q152 Errorless Valency and Oxidation State MCQ
Which of the following gas does not have an octet or eight electrons in the outer shell
A.
Ne
B.
Ar
C.
Rn
D.
He
IIT JEE 2001 Q153 Errorless Critical Thinking MCQ
The set representing the correct order of first ionisation potential is
A.
K > Na > Li
B.
Be > Mg > Ca
C.
B > C > N
D.
Ge > Si > C
AIIMS 2000 Q154 Errorless Extended or Long Form of Periodic Table MCQ
Which of the following is the atomic number of a metal
A.
32
B.
34
C.
36
D.
38
AIIMS 2000 Q155 Errorless Extended or Long Form of Periodic Table MCQ
Which of the following statement is not correct regarding hydrogen atom
A.
It resembles halogens in some properties
B.
It resembles alkali metals in some properties
C.
It can be placed in $7^{\text{th}}$ group of periodic table
D.
It can not be placed in first group of periodic table
DPMT 2000 Q156 Errorless Extended or Long Form of Periodic Table MCQ
Which configuration represents a noble gas
A.
$1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}3d^{10}4s^{2}$
B.
$1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}$
C.
$1s^{2}2s^{2}2p^{6}3p^{6}$
D.
$1s^{2}2s^{2}2p^{6}3s^{2}$
MP PET 2000 Q157 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.
$Cr^{3+}$
RPET 2000 Q158 Errorless Extended or Long Form of Periodic Table MCQ
Highest density is of ......
A.
Ir
B.
Os
C.
Pb
D.
Hg
RPET 2000 Q159 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 Q160 Errorless Extended or Long Form of Periodic Table MCQ
Group comprising of all metals is
A.
III A
B.
IV A
C.
VII A
D.
II A
RPET 2000 Q161 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
MP PET 2000 Q162 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 Q163 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 Q164 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
RPMT 2000 Q165 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 Q166 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.
$Li \rightarrow Li^{+}$
AMU 2000 Q167 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 PET 2000 Q168 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.
$BaCl_{2} < CaCl_{2} < MgCl_{2} < BeCl_{2}$
DCE 2000 Q169 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 Q170 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 Q171 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 Q172 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 Screening 2000 Q173 Errorless JEE Section MCQ
Statement 1 : The first ionisation energy of Be is greater than that of B. Statement 2 : 2p orbital is lower in energy than 2s orbital.
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.
DCE 1999 Q174 Errorless Extended or Long Form of Periodic Table MCQ
Whose name is not associated with the development of Periodic Table
A.
Prout's
B.
Newlands
C.
Rutherford
D.
Loother Meyer
AIIMS 1999; CPMT 1999 Q175 Errorless Atomic and Ionic Radii MCQ
The radii of $F, F^{-}, O$ and $O^{-2}$ are in the order of
A.
$O^{2-} > F^{-} > O > F$
B.
$O^{2-} > F^{-} > F > O$
C.
$F^{-} > O^{2-} > F > O$
D.
$O^{2-} > O > F^{-} > F$