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Classification of Elements and Periodicity in Properties

301 Questions Start Errorless Test
All Exams Errorless
Kurukshetra CEE 1991 Q251 Errorless Ionisation Energy MCQ
With reference to concept of ionisation potential, which one of the following sets are correct
A.
$U > K > Cs$
B.
$B > U > K$
C.
$Cs > U > B$
D.
$Cs < U < K$
BIT 1990; UPSEAT 2001; MP PMT 2001; AFMC 2012 Q252 Errorless Extended or Long Form of Periodic Table MCQ
Which of these does not reflect the periodicity of the elements
A.
Bonding behaviour
B.
Electronegativity
C.
Ionisation energy
D.
Neutron/proton ratio
DPMT 1990; DCE 2000 Q253 Errorless Valency and Oxidation State MCQ
The correct order of increasing order of oxidising power is
A.
$F_{2} < Cl_{2} < Br_{2} < I_{2}$
B.
$F_{2} < Br_{2} < Cl_{2} < I_{2}$
C.
$Cl_{2} < Br_{2} < F_{2} < I_{2}$
D.
$I_{2} < Br_{2} < Cl_{2} < F_{2}$
Roorkee (IIT) 1990 Q254 Errorless Critical Thinking MCQ
Arrange S, O and Se in ascending order of electron affinity
A.
O < Se < S
B.
Se < O < S
C.
S < O < Se
D.
S < Se < O
IIT 1990 Q255 Errorless Critical Thinking MCQ
Amongst the following elements (whose electronic configurations are given below), the one having the highest ionization energy is
A.
$[Ne]3s^{2}3p^{1}$
B.
$[Ne]3s^{2}3p^{3}$
C.
$[Ne]3s^{2}3p^{2}$
D.
$[Ne]3d^{10}4s^{2}4p^{3}$
Roorkee (IIT) 1990 Q256 Errorless Critical Thinking MCQ
The process requiring the absorption of energy is
A.
$F\to F^{-}$
B.
$Cl\to Cl^{-}$
C.
$O\to O^{2 - }$
D.
$H\rightarrow H^{-}$
CBSE PMT 1989 Q257 Errorless Extended or Long Form of Periodic Table MCQ
Modern periodic table is based on the atomic number of the elements. The experiment which proved the significance of the atomic number was
A.
Mullikan's oil drop experiment
B.
Moseley's work on $X$ -ray spectra
C.
Bragg's work on $X$ -ray diffraction
D.
Discovery of $X$ -rays by Rontgen
Pb. CET 1989 Q258 Errorless Atomic and Ionic Radii MCQ
In the isoelectronic species the ionic radii (ƅ) of $N^{3-}$ , $O^{2-}$ and $F^{-}$ are respectively given by
A.
1.36, 1.40, 1.71
B.
1.36, 1.71, 1.40
C.
1.71, 1.40, 1.36
D.
1.71, 1.36, 1.40
EAMCET 1989 Q259 Errorless Atomic and Ionic Radii MCQ
Which one of the following indicates the correct order of atomic size
A.
Be > F > C > Ne
B.
Be < C < F < Ne
C.
Be > C > F > Ne
D.
F < Ne < Be < C
CPMT 1989; MP PET 2001 Q260 Errorless Ionisation Energy MCQ
Ionisation potential is lowest for
A.
Halogens
B.
Inert gases
C.
Alkaline earth metals
D.
Alkali metals
IIT 1989 Q261 Errorless Critical Thinking MCQ
Which of the following is paramagnetic
A.
$O_2^-$
B.
$CN^{-}$
C.
$CO$
D.
$NO^{+}$
IIT 1989 Q262 Errorless Critical Thinking MCQ
Which one of the following is strongest base
A.
$AsH_3$
B.
$NH_3$
C.
$PH_3$
D.
$SbH_3$
IIT 1989 Q263 Errorless Critical Thinking MCQ
Which one of the following is the smallest in size
A.
$N^{3-}$
B.
$O^{2-}$
C.
$F^{-}$
D.
$Na^{+}$
IIT JEE 1989 Q264 Errorless JEE Section MSQ
The first ionisation potential of nitrogen and oxygen atoms are related as follows
A.
The ionisation potential of oxygen is less than the ionisation potential of nitrogen
B.
The ionisation-potential of nitrogen is greater than the ionisation potential of oxygen
C.
The two ionisation-potential values are comparable
D.
The difference between the two ionisation-potential is too large
IIT 1989 Q265 Errorless JEE Section MSQ
Sodium sulphate is soluble in water whereas barium sulphate is sparingly soluble because
A.
The hydration energy of sodium sulphate is more than its lattice energy
B.
The lattice energy of barium sulphate is more than its hydration energy
C.
The lattice energy has no role to play in solubility
D.
The hydration energy of sodium sulphate is less than its lattice energy
CPMT 1988; MP PET 1993; Pb. CET 2003; MP PMT 2006 Q266 Errorless Extended or Long Form of Periodic Table MCQ
Aluminium is diagonally related to (in periodic table)
A.
Li
B.
C
C.
B
D.
Be
IIT 1988 Q267 Errorless JEE Section MSQ
The statements that are true for the long form of the periodic table are
A.
It reflects the sequence of filling the electrons in the order of sub-energy level s, p, d and f
B.
It helps predict the stable valency states of the elements
C.
It reflects trends in physical and chemical properties of the elements
D.
It helps to predict the relative ionicity of the bond between any two elements.
EAMCET 1987, 90; RPMT 1997; MP PET 2003; Bihar CEE 2006 Q268 Errorless Extended or Long Form of Periodic Table MCQ
Which pair of elements has same chemical properties
A.
13, 22
B.
3, 11
C.
4, 24
D.
2, 4
IIT 1987 Q269 Errorless Critical Thinking MCQ
The first ionization potential in electron volts of nitrogen and oxygen atoms are respectively given by
A.
14.6, 13.6
B.
13.6, 14.6
C.
13.6, 13.6
D.
14.6, 14.6
IIT 1987 Q270 Errorless Critical Thinking MCQ
Atomic radii of fluorine and neon in Angstrom unit are respectively given by
A.
0.72, 1.60
B.
1.60, 1.60
C.
0.72, 0.72
D.
None of these values
IIT 1987 Q271 Errorless Critical Thinking MCQ
The electronegativity of the following elements increases in the order
A.
C, N, Si, P
B.
N, Si, C, P
C.
Si, P, C, N
D.
P, Si, N, C
CPMT 1986; KCET 1998 Q272 Errorless Extended or Long Form of Periodic Table MCQ
The long form of periodic table has
A.
Eight horizontal rows and seven vertical columns
B.
Seven horizontal rows and eighteen vertical columns
C.
Seven horizontal rows and seven vertical columns
D.
Eight horizontal rows and eight vertical columns
CPMT 1986 Q273 Errorless Extended or Long Form of Periodic Table MCQ
On moving from left to right across a period in the table the metallic character
A.
Increases
B.
Decreases
C.
Remains constant
D.
First increases and then decreases
Pb. CET 1986; CBSE PMT 1997; Kurukshetra CEE 1998; RPMT 1999; DCE 1999, 2007; MP PET 2000; MP PMT 2001; BCECE 2005 Q274 Errorless Atomic and Ionic Radii MCQ
Which one is the correct order of the size of the iodine species
A.
$I > I^{+} > I^{-}$
B.
$I > I^{-} > I^{+}$
C.
$I^{+} > I^{-} > I$
D.
$I^{-} > I > I^{+}$
MP PET 1986 Q275 Errorless Electronegativity MCQ
In third row of periodic table from Na to Cl
A.
Electronegativity increases
B.
Electronegativity decreases
C.
Ionisation energy decreases
D.
Atomic volume increases