According to Periodic law of elements, the variation in properties of elements is related to their .. [ AIEEE 2003]
7%
a) Nuclear masses
76%
b) Atomic numbers
10%
c) Nuclear neutron-proton number ratio
8%
d) Atomic masses
Q.2.
Electron affinity depends on ... [ MP PMT 2002]
10%
a) Atomic size
17%
b) Nuclear charge
12%
c) Atomic number
61%
d) Atomic size and nuclear charge both
Q.3.
Element with atomic number 56 belongs to which block? [ AFMC 2002]
42%
a) s
22%
b) p
25%
c) d
11%
d) f
Q.4.
Two elements whose electronegativities are 1.2 and 3.0, the bond formed between them would be ... [ MP PET 2002]
45%
a) Ionic
35%
b) Covalent
14%
c) Coordinate
6%
d)Metallic
Q.5.
Identify the incorrect match. Name IUPAC Official Name ...[NEET 2020]
(a) Unnilunium
(i) Mendelevium
(b) Unniltrium
(ii) Lawrencium
(c) Unnilhexium
(iii) Seaborgium
(d) Unununnium
(iv) Darmstadtium
21%
a) (c), (iii)
51%
b) (d), (iv)
18%
c)(a), (i)
9%
d) (b), (ii)
Q.6.
For the second period elements the correct increasing order of first ionisation enthalpy is: [ NEET 2019]
37%
a) Li < Be < B < C < N < O < F < Ne
52%
b) Li < B < Be < C < O < N < F < Ne
10%
c) Li < B < Be < C < N < O < F < Ne
2%
d) Li < Be < B < C < O < N < F < Ne
Q.7.
Eka aluminum and Eka-silicon are known as
75%
a) Gallium and Germanium
18%
b) Aluminium and Silicon
6%
c) Iron and Sulphur
1%
d) Neutron and Magnesium
Q.8.
Atomic radii of fluorine and neon in angstrom units are respectively given by .. [ IIT 1987]
54%
a) 0.72, 1.60
22%
b) 1.60, 1.60
10%
c) 0.72, 0.72
15%
d) None of these value
Q.9.
Elements of the same vertical group of the periodic table have ... [ NTSE 1983]
12%
a) Same atomic size
18%
b) same electronic configuration
62%
c) same number of electrons in outer shell of their atoms
9%
d) same number of atoms
Q.10.
Californium is the member of .. [ MLNR 1987]
46%
a) Actinide series
10%
b) Alkali metals
13%
c) Alkaline earth metals
30%
d) Lanthanide series
Q.11.
The lightest metal in the periodic table is ... [ AFMC 1988]
10%
a) Na
25%
b) Hg
4%
c) Ca
61%
d) Li
Q.12.
The statement that is not true for the long form of the periodic table is.. [ IIT 1988]
17%
a) It reflects the sequence of filling the electrons in the order or sub-energy levels s,p,d,f
30%
b) It helps to predict the stable valency states of the elements
20%
c) It reflects trans in physical and chemical properties of the elements
33%
d) It helps to predict the relative ionicity of the bond between any two elements
Q.13.
On moving down the group of regular elements both atomic and ionic radii increases with increasing .. [ Bihar CEE 1995]
71%
a) Atomic number
15%
b) Atomic weight
13%
c) Atomic mass
1%
d) None of these
Q.14.
The screening effect of d-electrons is .. [ CPMT 1983]
13%
a) Equal to p-electrons
26%
b) Much more than p-electrons
12%
c) same as f-electrons
49%
d) less than p-electrons
Q.15.
The electronic configuration of an element is 1s2 2s2 2p6 3s2 3pWhat is the atomic number of the element which is just-below the above element in the periodic table? [ CBSE PMT 1995]
27%
a) 33
31%
b) 34
29%
c) 31
13%
d) 49
Q.16.
Which element has the greatest tenancy to lose electrons? [ NCERT 1980]
23%
a) F
17%
b) S
29%
c) Fe
30%
d) Be
Q.17.
The long form of the periodic table consists of .. [ CPMT 1986]
15%
a) 8 horizontal and 7 vertical series
74%
b) 7 horizontal and 18 vertical series
1%
c) 7 horizontal and 7 vertical series
9%
d) 8 horizontal and 8 vertical series
Q.18.
Which of the following gas greater tendency to lose electrons .. [ BIT 1987]
23%
a) F
44%
b) Fr
10%
c) S
23%
d) Be
Q.19.
Which one of the following represents the electronic configuration of the most electropositive element? ..[ AIIMS 1982]
35%
a) [He] 2s1
41%
b) [Xe]6s1
15%
c) [He]2s2
9%
d) [Xe]2s2
Q.20.
The outermost electronic configuration of the most electronegative element is .. [ IIT 1988]
7%
a) ns2np3
19%
b) ns2np4
39%
c) ns2np5
35%
d) ns2np6
Q.21.
The electron configuration of four elements are given below. Which elements does not belong to the same family as others? [ CBSE PMT 1989]
17%
a) [ Xe] 4f145d106s2
14%
b) [ Kr] 4d10 5s2
67%
c) [ Ne] 3s2 3p5
2%
d) [ Ar] 3d104s2
Q.22.
Pauling's electronegativity values for elements are useful in predicting .. [ CBSE PMT 1989]
53%
a) Polarity of the molecules
17%
b) Position in the E.M.F. series
20%
c) COordination number
10%
d) Dipole moments
Q.23.
In halogen group which tendency works with increase in atomic number .. [ NCERT 1980]
18%
a) Ionic size decreases
33%
b) Tendency to lose electron decreases
32%
c) Ionization energy decreases
17%
d) IN MX2 (M=Metal, X=halogen) Covalent character decreases
Q.24.
The maximum valency of halogen group with respect to oxygen is ..[ DPMT 1986]
29%
a) 1
12%
b) 5
27%
c) 6
32%
d) 7
Q.25.
Amongst the following electronic configurations which one will have the highest electron affinity? [ Pb. CET 1988]
17%
a) 1s1
12%
b) 1s22s1
23%
c) 1s22s22p4
47%
d) 1s22s22p5
Q.26.
(n-1)d10ns2 is the general electronic configuration of .. [ Pb CET 1998]
17%
a) Fe, Co, Ni
22%
b) Cu,Ag, Au
53%
c) Zn, Cd, Hg
8%
d) Sc, Y, La
Q.27.
Mercury is the only metal which is liquid at 0°C. This is due to its.. [ CBSE PMT 1995]
65%
a) Very high ionization energy and weak metallic bond
14%
b) Low ionization potential
6%
c) High atomic radius
14%
d) High vapour pressure
Q.28.
The ionization potential of nitrogen is more than that of oxygen because of ... [ AIIMS 1982 ]
15%
a) The greater attraction of the electrons by nucleus
64%
b) The extra stability of the half filed p-orbitals
15%
c) The smaller size of nitrogen
5%
d) More penetration effect
Q.29.
The first ionization potential of Na, Mg, Al and Si are in the order .. [ IIT 1988]
34%
a) Na < Mg > Al < Si
39%
b) Na > Mg > Al > Si
13%
c) Na < Mg < Al > Si
15%
d) Na > Mg > Al < Si
Q.30.
The first ionization potential of Na, Mg, Al and Si are in the order .. [ IIT 1988]
25%
a) Na < Mg > Al < Si
18%
b) Na > Mg > Al > Si
12%
c) Na < Mg < Al > Si
45%
d) Na > Mg > Al < Si
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