Q.1
According to Periodic law of elements, the variation in properties of elements is related to their .. [ AIEEE 2003]
  • a) Nuclear masses
  • b) Atomic numbers
  • c) Nuclear neutron-proton number ratio
  • d) Atomic masses
Q.2
Electron affinity depends on ... [ MP PMT 2002]
  • a) Atomic size
  • b) Nuclear charge
  • c) Atomic number
  • d) Atomic size and nuclear charge both
Q.3
Element with atomic number 56 belongs to which block? [ AFMC 2002]
  • a) s
  • b) p
  • c) d
  • d) f
Q.4
Two elements whose electronegativities are 1.2 and 3.0, the bond formed between them would be ... [ MP PET 2002]
  • a) Ionic
  • b) Covalent
  • c) Coordinate
  • 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
  • a) (c), (iii)
  • b) (d), (iv)
  • c)(a), (i)
  • d) (b), (ii)
Q.6
For the second period elements the correct increasing order of first ionisation enthalpy is: [ NEET 2019]
  • a) Li < Be < B < C < N < O < F < Ne
  • b) Li < B < Be < C < O < N < F < Ne
  • c) Li < B < Be < C < N < O < F < Ne
  • d) Li < Be < B < C < O < N < F < Ne
Q.7
Eka aluminum and Eka-silicon are known as
  • a) Gallium and Germanium
  • b) Aluminium and Silicon
  • c) Iron and Sulphur
  • d) Neutron and Magnesium
Q.8
Atomic radii of fluorine and neon in angstrom units are respectively given by .. [ IIT 1987]
  • a) 0.72, 1.60
  • b) 1.60, 1.60
  • c) 0.72, 0.72
  • d) None of these value
Q.9
Elements of the same vertical group of the periodic table have ... [ NTSE 1983]
  • a) Same atomic size
  • b) same electronic configuration
  • c) same number of electrons in outer shell of their atoms
  • d) same number of atoms
Q.10
Californium is the member of .. [ MLNR 1987]
  • a) Actinide series
  • b) Alkali metals
  • c) Alkaline earth metals
  • d) Lanthanide series
Q.11
The lightest metal in the periodic table is ... [ AFMC 1988]
  • a) Na
  • b) Hg
  • c) Ca
  • d) Li
Q.12
The statement that is not true for the long form of the periodic table is.. [ IIT 1988]
  • a) It reflects the sequence of filling the electrons in the order or sub-energy levels s,p,d,f
  • b) It helps to predict the stable valency states of the elements
  • c) It reflects trans in physical and chemical properties of the elements
  • 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]
  • a) Atomic number
  • b) Atomic weight
  • c) Atomic mass
  • d) None of these
Q.14
The screening effect of d-electrons is .. [ CPMT 1983]
  • a) Equal to p-electrons
  • b) Much more than p-electrons
  • c) same as f-electrons
  • 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]
  • a) 33
  • b) 34
  • c) 31
  • d) 49
Q.16
Which element has the greatest tenancy to lose electrons? [ NCERT 1980]
  • a) F
  • b) S
  • c) Fe
  • d) Be
Q.17
The long form of the periodic table consists of .. [ CPMT 1986]
  • a) 8 horizontal and 7 vertical series
  • b) 7 horizontal and 18 vertical series
  • c) 7 horizontal and 7 vertical series
  • d) 8 horizontal and 8 vertical series
Q.18
Which of the following gas greater tendency to lose electrons .. [ BIT 1987]
  • a) F
  • b) Fr
  • c) S
  • d) Be
Q.19
Which one of the following represents the electronic configuration of the most electropositive element? ..[ AIIMS 1982]
  • a) [He] 2s1
  • b) [Xe]6s1
  • c) [He]2s2
  • d) [Xe]2s2
Q.20
The outermost electronic configuration of the most electronegative element is .. [ IIT 1988]
  • a) ns2np3
  • b) ns2np4
  • c) ns2np5
  • 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]
  • a) [ Xe] 4f145d106s2
  • b) [ Kr] 4d10 5s2
  • c) [ Ne] 3s2 3p5
  • d) [ Ar] 3d104s2
Q.22
Pauling's electronegativity values for elements are useful in predicting .. [ CBSE PMT 1989]
  • a) Polarity of the molecules
  • b) Position in the E.M.F. series
  • c) COordination number
  • d) Dipole moments
Q.23
In halogen group which tendency works with increase in atomic number .. [ NCERT 1980]
  • a) Ionic size decreases
  • b) Tendency to lose electron decreases
  • c) Ionization energy decreases
  • 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]
  • a) 1
  • b) 5
  • c) 6
  • d) 7
Q.25
Amongst the following electronic configurations which one will have the highest electron affinity? [ Pb. CET 1988]
  • a) 1s1
  • b) 1s22s1
  • c) 1s22s22p4
  • d) 1s22s22p5
Q.26
(n-1)d10ns2 is the general electronic configuration of .. [ Pb CET 1998]
  • a) Fe, Co, Ni
  • b) Cu,Ag, Au
  • c) Zn, Cd, Hg
  • 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]
  • a) Very high ionization energy and weak metallic bond
  • b) Low ionization potential
  • c) High atomic radius
  • d) High vapour pressure
Q.28
The ionization potential of nitrogen is more than that of oxygen because of ... [ AIIMS 1982 ]
  • a) The greater attraction of the electrons by nucleus
  • b) The extra stability of the half filed p-orbitals
  • c) The smaller size of nitrogen
  • d) More penetration effect
Q.29
The first ionization potential of Na, Mg, Al and Si are in the order .. [ IIT 1988]
  • a) Na < Mg > Al < Si
  • b) Na > Mg > Al > Si
  • c) Na < Mg < Al > Si
  • d) Na > Mg > Al < Si
Q.30
The first ionization potential of Na, Mg, Al and Si are in the order .. [ IIT 1988]
  • a) Na < Mg > Al < Si
  • b) Na > Mg > Al > Si
  • c) Na < Mg < Al > Si
  • d) Na > Mg > Al < Si
0 h : 0 m : 1 s