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Classification of Elements and Periodicity in Properties

571 Questions Start Errorless Test
All Exams Errorless Allen
IIT 1982 Q376 Errorless Critical Thinking MCQ
The element with the highest first ionization potential is
A.
Boron
B.
Carbon
C.
Nitrogen
D.
Oxygen
CPMT 1981 Q377 Errorless Extended or long form of periodic table MCQ
In the periodic table going down in fluorine group
A.
Reactivity will increase
B.
Electronegativity will increase
C.
Ionic radius will increase
D.
Ionisation potential will increase
DPMT 1981, 82; CPMT 1984, 89; RPMT 1997; UPSEAT 2001; MP PET 2001, 13; MP PMT 2006 Q378 Errorless Valency and oxidation state MCQ
Variable valency is a general feature of
A.
s-block elements
B.
p-block elements
C.
d-block elements
D.
All of these
IIT 1981 Q379 Errorless Critical Thinking MCQ
The correct order of second ionization potential of carbon, nitrogen, oxygen and fluorine is
A.
C > N > O > F
B.
O > N > F > C
C.
O > F > N > C
D.
F > O > N > C
CPMT 1979, 93; MP PMT 2011 Q380 Errorless Extended or long form of periodic table MCQ
The element X, Y, Z and T have the indicated electronic configurations. Starting with the innermost shell, which is the most metallic element
A.
X = 2,8,4
B.
Y = 2,8,8
C.
Z = 2,8,8,1
D.
T = 2,8,8,7
EAMCET 1979 Q381 Errorless Extended or long form of periodic table MCQ
Which one of the following combination represents a metallic element
A.
2,8,7
B.
2,8,8
C.
2,8,4
D.
2,8,2
CPMT 1978 Q382 Errorless Extended or long form of periodic table MCQ
Element of atomic number 6 is placed in
A.
IV group
B.
IV period
C.
VI group
D.
III group
CPMT 1976 Q383 Errorless Extended or long form of periodic table MCQ
The elements with atomic number 10, 18, 36, 54 and 86 are all
A.
Light metals
B.
Inert gases
C.
Halogens
D.
Rare-earths
CPMT 1976; Kurukshetra CEE 1998 Q384 Errorless Extended or long form of periodic table MCQ
The heaviest atom amongst the following is
A.
U
B.
Ra
C.
Pb
D.
Hg
CPMT 1976 Q385 Errorless Extended or long form of periodic table MCQ
The elements on the right side of the periodic table are
A.
Metals
B.
Metalloids
C.
Non-metals
D.
Transition elements
CPMT 1976 Q386 Errorless Extended or long form of periodic table MCQ
The most important active step in the development of periodic table was taken by
A.
Mendeleev
B.
Dalton
C.
Avogadro
D.
Cavendish
CPMT 1976 Q387 Errorless Electronegativity MCQ
Which element has the lowest electronegativity
A.
Li
B.
F
C.
Fe
D.
Cl
CPMT 1972 Q388 Errorless Extended or long form of periodic table MCQ
Who is called the father of chemistry
A.
Faraday
B.
Priestley
C.
Rutherford
D.
Lavoiser
Q389 Errorless Extended or long form of periodic table MCQ
The d -b lock e lements consist mostly of
A.
Monovalent metals
B.
All non-metals
C.
Elements which generally form stoichiometric metal
D.
Many metals with catalytic properties
Q390 Errorless Atomic and Ionic radii MCQ
In the main group elements (i) as we proceed down the same group in the periodic table and (ii) as we proceed from left to right in the same period, the atomic radius
A.
(i) Increase continuously; (ii) Decreases continuously
B.
(i) Decreases continuously; (ii) Increases continuously
C.
(i) Increases continuously; (ii) Decreases upto the group IV and then increases upto the end of the period
D.
(i) Decreases continuously; (ii) Decreases upto the group IV and then increases upto the end of the period
Q391 Errorless Atomic and Ionic radii MCQ
Point out the wrong statement On moving horizontally from left to right across a period in the periodic table
A.
Metallic character decreases
B.
Electronegativity increases
C.
Gram atomic volume first decreases and then increases
D.
Size of the atoms increases for normal elements
Q392 Errorless Atomic and Ionic radii MCQ
Which statement is correct
A.
For potassium, the atomic radius < ionic radius; but for bromine, the atomic radius > ionic radius
B.
For potassium and bromine both, the atomic radii > ionic radii
C.
For potassium and bromine both, the atomic radii < ionic radii
D.
For potassium, the atomic radius $>$ ionic radius but for bromine, the atomic radius $<$ ionic radius
Q393 Errorless Ionisation Energy MCQ
The first ionisation energy of oxygen is less than that of nitrogen. Which of the following is the correct reason for this observation
A.
Lesser effective nuclear charge of oxygen than nitrogen
B.
Lesser atomic size of oxygen than nitrogen
C.
Greater inter-electron repulsion between two electrons in the same $p$ orbital counter balances the increase in effective nuclear charge on moving from nitrogen to oxygen
D.
Greater effective nuclear charge of oxygen than nitrogen
E.
Higher electronegativity of oxygen than nitrogen
Q394 Errorless Electron affinity MCQ
Which one of the following arrangements represents the correct order of electron gain enthalpy (with negative sign) of the given atomic species
A.
$C l < F < S < O$
B.
$S < O < C l < F$
C.
$O < S < F < C l$
D.
$F < C l < O < S$
Q395 Errorless Critical Thinking MCQ
Which element has the greatest tendency to loose electrons
A.
F
B.
S
C.
Fe
D.
Be
Q396 Errorless Critical Thinking MCQ
The statement that is not correct for the periodic classification Of element is
A.
The properties of elements are the periodic functions of their atomic numbers
B.
Non-metallic elements are lesser in number than metallic elements
C.
The first ionization energies of elements along a period do not vary in a regular manner with increase in atomic number
D.
For transition elements the d-subshell are filled with electrons monotonically with increase in atomic number
Q397 Errorless Critical Thinking MCQ
Identify the correct order of acidic strengths of $CO_{2}$ , CuO, CaO, $H_{2}O$
A.
CaO < CuO < $H_{2}O < CO_{2}$
B.
$H_{2}O < CuO < CaO < CO_{2}$
C.
CaO < $H_{2}O < CuO < CO_{2}$
D.
$H_{2}O < CO_{2} < CaO < CuO$
Q398 Errorless Latest Trend MCQ
The incorrect statement is
A.
The first ionization enthalpy of $K$ is less than that of Na and Li
B.
Xe does not have the lowest first ionization enthalpy in its group
C.
The first ionization enthalpy of element with atomic number 37 is lower than that of the element with atomic number 38
D.
The first ionization enthalpy of Ga is higher than that of the d-block element with atomic number 30
Q399 Allen DEVELOPMENT OF PERIODIC TABLE MCQ
Mendeleev periodic table is based on :-
A.
Atomic number
B.
Increasing order of number of protons
C.
Electronic configuration
D.
None of the above
Q400 Allen DEVELOPMENT OF PERIODIC TABLE MCQ
Which of the following sets of elements follows Newland's octave rule:-
A.
Be, Mg, Ca
B.
Na, K, Rb
C.
F, Cl, Br
D.
B, Al, Ga