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Classification of Elements and Periodicity in Properties

571 Questions Start Errorless Test
All Exams Errorless Allen
MP PET/PMT 1998 Q251 Errorless Electronegativity MCQ
In the following, the element with the highest electropositivity is
A.
Copper
B.
Cesium
C.
Barium
D.
Chromium
MP PET/PMT 1998; MP PMT 2002 Q252 Errorless Electronegativity MCQ
On going from right to left in a period in the periodic table the electronegativity of the elements
A.
Increases
B.
Decreases
C.
Remain unchanged
D.
Decreases first then increases
MP PET/PMT 1998 Q253 Errorless Electronegativity MCQ
Which element has the highest electronegativity
A.
C
B.
Mg
C.
O
D.
S
CBSE PMT 1998 Q254 Errorless Valency and oxidation state MCQ
Which of the following elements shows maximum number of different oxidation states in its compounds
A.
Eu
B.
La
C.
Gd
D.
Am
Pb. PMT 1998 Q255 Errorless Critical Thinking MCQ
Which of the following configurations represents atoms of the elements having the highest second ionisation energy
A.
$1s^{2}2s^{2}2p^{4}$
B.
$1s^{2}2s^{2}2p^{6}$
C.
$1s^{2}2s^{2}2p^{6}3s^{1}$
D.
$1s^{2}2s^{2}2p^{6}3s^{2}$
CPMT 1997 Q256 Errorless Extended or long form of periodic table MCQ
The long form of periodic table is based on
A.
Shape of the atom
B.
Mass of the atom
C.
Atomic number of the atom
D.
Electronegativity
RPMT 1997; EAMCET 1998 Q257 Errorless Extended or long form of periodic table MCQ
As per the modern periodic law, the physical and chemical properties of elements are periodic functions of their
A.
Atomic volume
B.
Electronic configuration
C.
Atomic weight
D.
Atomic size
MP PMT 1997; RPMT 2002 Q258 Errorless Extended or long form of periodic table MCQ
Which of the properties remains unchanged on descending a group in the periodic table
A.
Atomic size
B.
Density
C.
Valence electrons
D.
Metallic character
MP PET 1997 Q259 Errorless Extended or long form of periodic table MCQ
Who developed the long form of periodic table
A.
Lothar Meyer
B.
Niels Bohr
C.
Mendeleev
D.
Moseley
RPMT 1997 Q260 Errorless Extended or long form of periodic table MCQ
Dobernier traids is
A.
Na, K, Rb
B.
Mg, S, As
C.
Cl, Br, I
D.
P, S, As
CBSE PMT 1997 Q261 Errorless Atomic and Ionic radii MCQ
Which of the following does not represent the correct order of the property indicated
A.
$Sc^{3+} > Cr^{3+} > Fe^{3+} > Mn^{3+}$ : ionic radii
B.
$Sc < Ti < Cr < Mn : \text{Density}$
C.
$Mn^{2+} > Ni^{2+} < Co^{2+} < Fe^{2+}$ : ionic radii
D.
$FeO < CaO > MnO > CuO$ : Basic nature
EAMCET 1997; BHU 1999 Q262 Errorless Atomic and Ionic radii MCQ
Of the following, the one with largest size is
A.
$Cl^{-}$
B.
Ar
C.
$K^{+}$
D.
$Ca^{2+}$
MP PMT 1997 Q263 Errorless Atomic and Ionic radii MCQ
Point out the wrong statement In a given period of the periodic table the s - block element has, in general, a lower value of
A.
Ionisation energy
B.
Electronegativity
C.
Atomic radius
D.
Electron affinity
MP PET 1997 Q264 Errorless Atomic and Ionic radii MCQ
The atomic radius of elements of which of the following series would be nearly the same
A.
Na K Rb Cs
B.
Li Be B C
C.
Fe Co Ni Cu
D.
F Cl Br I
JIPMER 1997; CPMT 1997; AIIMS 2000 Q265 Errorless Ionisation Energy MCQ
Which of the following gaseous atoms has highest value of IE
A.
P
B.
Si
C.
Mg
D.
Al
RPMT 1997; DCE 1999; BHU 2006 Q266 Errorless Ionisation Energy MCQ
The ionisation energy of nitrogen is larger than that of oxygen because of
A.
Greater attraction of electrons by the nucleus
B.
The size of nitrogen atom being smaller
C.
The half-filled $p$ -orbitals possess extra stability
D.
Greater penetration effect
CPMT 1997 Q267 Errorless Ionisation Energy MCQ
First I.P. of Mg is ..... than Al
A.
Less
B.
More
C.
Equal
D.
None of these
JIPMER 1997 Q268 Errorless Ionisation Energy MCQ
The second ionisation potential of an element M is the energy required to
A.
Remove one mole of electron from one mole of gaseous anion
B.
Remove one mole of electron from one mole of gaseous cation of the element
C.
Remove one mole of electron from one mole of monovalent gaseous cation of the element
D.
Remove 2 moles of electrons from one mole of gaseous atoms
CPMT 1997 Q269 Errorless Electron affinity MCQ
Fluorine has low electron affinity than chlorine because of
A.
Smaller radius of fluorine, high density
B.
Smaller radius of chlorine, high density
C.
Bigger radius of fluorine, less density
D.
Smaller radius of chlorine, less density
MP PET 1997; J & K CET 2005 Q270 Errorless Electron affinity MCQ
The correct order of electron affinity of B, C, N, O is
A.
O > C > N > B
B.
B > N > C > O
C.
O > C > B > N
D.
O > B > C > N
JIPMER 1997 Q271 Errorless Valency and oxidation state MCQ
All element in $3^{rd}$ period have
A.
An atomic number 3
B.
3 complete sub-shells
C.
Valence electrons shell
D.
3 electrons less than the octet
RPMT 1997 Q272 Errorless Critical Thinking MCQ
Which has highest melting point
A.
LiCl
B.
BeClā‚‚
C.
BClā‚ƒ
D.
CClā‚„
IIT 1997 Q273 Errorless Critical Thinking MCQ
The incorrect statement among the following is
A.
The first ionization potential of Al is less than the first ionization potential of Mg
B.
The second ionization potential of Mg is greater than the second ionization potential of Na
C.
The first ionization potential of Na is less than the first ionization potential of Mg
D.
The third ionization of Mg is greater than third ionization of Al
IIT 1997 Q274 Errorless Critical Thinking MCQ
Which of the following compounds is expected to be coloured
A.
$Ag_{2}SO_{4}$
B.
$CuF_{2}$
C.
$MgF_{2}$
D.
$CuCl$
BHU 1996; AMU 2000 Q275 Errorless Extended or long form of periodic table MCQ
Which of the following is metalloid
A.
Pb
B.
Zn
C.
As
D.
None of these