JEE Questions for Chemistry Classification Of Elements And Periodicity In Properties Quiz 4 - MCQExams.com

Which one of the following is an amphoteric oxide?
  • ZnO
  • Na2O
  • SO2
  • B2O3
The first ionisation potential of Na, Mg, Al and Si are in the order
  • Na < Mg > Al < Si
  • Na > Mg > Al < Si
  • Na < Mg < Al > Si
  • Na > Mg > Al < Si
Ionic radius is
  • inversely proportional to effective nuclear charge
  • inversely proportional to square of effective nuclear charge
  • directly proportional to effective nuclear charge
  • directly proportional to square of effective nuclear charge
Which one of the following arrangements represents the correct order of electron gain enthalpy (with negative sign) of the given atomic species ?
  • Cl < F < S < O
  • O < S < F < Cl
  • S < O < Cl < F
  • F < Cl < O < S
The electronic configuration of most electronegative elements is
  • 1s2, 2s2, 2p5
  • 1s2, 2s2, 2p4, 3s1
  • 1s2, 2s2, 2p6, 3s1, 3p5
  • 1s2, 2s2, 2p6, 3s2, 3p5
Which one of the following ions has the highest value of ionic radius ?
  • Li+
  • B3+
  • O2-
  • F-
Pauling's equation for determining the electronegativity of an element, is
where, XA, XB = electronegativity values of elements A and B, ∆ = represents polarity of A-B bond.

  • Chemistry-Classification of Elements and Periodicity in Properties-3000.png
  • 2)
    Chemistry-Classification of Elements and Periodicity in Properties-3001.png

  • Chemistry-Classification of Elements and Periodicity in Properties-3002.png

  • Chemistry-Classification of Elements and Periodicity in Properties-3003.png
The ionic radius (Å) of C4- and O2- respectively, are 2.60 and 1.40. The ionic radius of the isoelectronic ion N3- would be
  • 2.6
  • 1.71
  • 1.4
  • 0.95
Electron affinity is positive, when
  • O changes into O-
  • O- changes into O2-
  • O changes into O+
  • electron affinity is always negative
Identify the correct order in which the covalent radius of the following elements increases
I. Ti
II. Ca
III. Sc
  • I, II and III
  • III, II and I
  • II, I and III
  • I, III and II
Be and Al exhibit diagonal relationship. Which of the following statements about them is/are not true?
I. Both react with HCl to liberate H2.
II. They are made passive by HNO3.
III. Their carbides gives acetylene on treatment with water.
IV. Their oxides are amphoteric.
  • III and IV
  • I and III
  • Only I
  • II and III
  • Only III
In which of the following arrangements, the sequence is not strictly according to the property written against it?
  • CO2 < SiO2 < SnO2 < PbO2 : increasing oxidising power
  • HF < HCl < HBr < HI : increasing acid strength
  • NH3 > PH3 < AsH3 < SbH3 : increasing basic strength
  • B < C < O < N : increasing first ionisation enthalpy
Which is not the correct order for the stated property?
  • Ba > Sr > Mg; atomic radius
  • F > O > N; first ionisation enthalpy
  • Cl > F > I; electron affinity
  • O > Se > Te; electronegativity
The atomic numbers of elements A, B, C and D are Z-1, Z, Z+ 1 and Z+ 2 , respectively. If B is a noble gas, choose the correct answer from the following statements.
I. A has higher electron affinity.
II. C exists in +2 oxidation state.
III. D is an alkaline earth metal.
  • I and II
  • II and III
  • I and III
  • I, II and III
The first ionisation energy of oxygen is less than that of nitrogen. Which of the following is the correct reason for this observation?
  • Lesser effective nuclear charge of oxygen than nitrogen
  • Lesser atomic size of oxygen than nitrogen
  • Greater interelectron repulsion between two electrons in the same p-orbital counter balances the increase in effective nuclear charge on moving from nitrogen to oxygen
  • Greater effective nuclear charge of oxygen than nitrogen
  • Higher electronegativity of oxygen than nitrogen
Match the following columns.
Chemistry-Classification of Elements and Periodicity in Properties-3010.png
  • A = 3, B = 1, C = 2, D = 4
  • A = 4, B = 3, C = 2, D = 1
  • A = 2, B = 4, C = 1, D = 3
  • A = 1, B = 2, C = 3, D = 4
  • A = 4, B = 1, C = 2, D = 3
The electronic configurations of four elements are given below. Arrange these elements in the correct order of the magnitude (without sign) of their electron affinity.
I. 2s22p5
II. 3s23p5
III. 2s22p4
IV. 3s23p4
Select the correct answer using the codes given below
  • I < II < IV < III
  • II < I < IV < III
  • I < III < IV < II
  • III < IV< I < II
One mole of magnesium in the vapour state absorbed 1200 kJmo1-1 of energy. If the first and second ionisation energies of Mg are 750 and 1450 kJmo1-1 respectively, the final composition of the mixture is
  • 31% Mg + + 69% Mg 2+
  • 69% Mg + + 31% Mg 2+
  • 86% Mg + + 14% Mg 2+
  • 14% Mg + + 86% Mg 2+
  • 13% Mg + + 87% Mg 2+
The successive ionisation energy values for an element X are given below.
I. Ist ionisation energy = 410 kJ mol-1
II. 2nd ionisation energy = 820 kJ mol-1
III. 3rd ionisation energy = 1100 kJ mol-1
IV. 4th ionisation energy = 1500 kJ mol-1
V. 5th ionisation energy = 3200 kJ mol-1
Find out the number of valence electron for the atom X.
  • 4
  • 3
  • 5
  • 2
  • 1
Observe the following statements.
I. The physical and chemical properties of elements are periodic functions of their electronic configuration.
II. Electronegativity of fluorine is less than the electronegativity of chlorine.
III. Electropositive nature decreases from top to bottom in a group.
The correct answer is
  • I, II and III
  • Only I
  • I and II
  • II and III
In which of the following arrangements the order is not according to the property indicated against it?
  • Li < Na < K < Rb increasing metallic radius
  • I < Br < F < Cl increasing electron gain enthaly (with negative sign)
  • B < C < N < O increasing first ionisation enthalphy
  • Al3+ < Mg2+ < Na+ < F- increasing ionic size
Following statements regarding the periodic trends of chemical reactivity to the alkali metals and the halogens are given. Which of these statements gives the correct picture?
  • The reactivity decreases in the alkali metals but increases in the halogens with increase in atomic number down the group
  • In both the alkali metals and the halogens the chemical reactivity decreases with increase in atomic number down the group
  • Chemical reactivity increases with increase in atomic number down the group in both the alkali metals and halogens
  • In alkali metals the reactivity increases but in the halogens it decreases with increase in atomic number down the group
Which element has the greatest tendency to lose electrons?
  • F
  • S
  • Fe
  • Be
In halogen group which tendency works with increase in atomic number
  • Ionic size decreases
  • Tendency to lose electrons decreases
  • Ionization energy decreases
  • In MX2 (M = metal, X = halogen) covalent character decreases
The ionization potential of nitrogen is more than that of oxygen because of
  • The greater attraction of the electrons by the nucleus
  • The extra stability of the half- filled p-orbitals
  • The smaller size of nitrogen
  • More penetration effect
The ionization energy of an atom is the energy
  • Needed to add an electron to an atom
  • Needed to transfer an electron from one orbit to another
  • Needed to convert the atom into radioactive isotope
  • Just enough to cause an electron to escape from the atom
In fluorine group of periodic table, on going down
  • Ionic radius increases
  • Electronegativity increases
  • Ionization potential increases
  • Reactivity increases
In both 1st and VII group of the periodic table the following property increases with increases in atomic number
  • Oxidising property
  • Atomic size
  • Highest valency state
  • Reactivity with water
Which one of the following represents the electronic configuration of the most electropositive element ?
  • [He]2s1
  • [Xe]6s1
  • [He]2s2
  • [Xe]2s2
Elements of the same vertical group of the periodic table have
  • Same atomic size
  • Same electronic configuration
  • Same number of electrons in outer most shell of their atoms
  • Same number of atoms
0:0:1


Answered Not Answered Not Visited Correct : 0 Incorrect : 0

Practice Chemistry Quiz Questions and Answers