General
✓✗The correct order of the decreasing ionic radii among the following isoelectronic species is
- Ca2+ > K+ > S2– > Cl–
- Cl– > S2– > Ca2+ > K+
- S2– > Cl– > K+ > Ca2+
- K+ > Ca2+ > Cl– > S2–
General
✓✗Amongst the elements with following electronic configurations, which one of them may have the highest ionization energy?
- Ne [3s2 3p2]
- Ar [3d10 4s2 4p3]
- Ne [3s2 3p1]
- Ne [3s2 3p3]
General
✓✗Ionic radii are
- 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.
General
✓✗Among the following which one has the highest cation to anion size ratio?
- CsI
- CsF
- LiF
- NaF
General
✓✗If the atomic number of an element is 33, it will be placed in the periodic table in the
- first group
- third group
- fifth group
- seventh group
General
✓✗Which of the following orders of ionic radii is correctly represented?
- H– > H+ > H
- Na+ > F– > O2–
- F– > O2– > Na+
- Al3+ > Mg2+ > N3–
General
✓✗Which of the following represents the correct order of increasing electron gain enthalpy with negative sign for the elements O, S, F and Cl?
- Cl < F < O < S
- O < S < F < Cl
- F < S < O < Cl
- S < O < Cl < F
General
✓✗Which one of the following orders is not in accordance with the property stated against it?
- F2 > Cl2 > Br2 > I2 : Bond dissociation energy
- F2 > Cl2 > Br2 > I2 : Oxidising power
- HI > HBr > HCl > HF : Acidic property in water
- F2 > Cl2 > Br2 > I2 : Electronegativity
General
✓✗With which of the following electronic configuration an atom has the lowest ionisation enthalpy?
- 1s2 2s2 2p3
- 1s2 2s2 2p5 3s1
- 1s2 2s2 2p6
- 1s2 2s2 2p5
General
✓✗The electronic configuration of an element is 1s22s22p63s23p3. What is the atomic number of the element, which is just below the above element in the periodic table?
- 33
- 34
- 36
- 49
General
✓✗Which statement is wrong?
- Bond energy of F2 > Cl2
- Electronegativity of F > Cl
- F is more oxidising than Cl
- Electron affinity of Cl > F
General
✓✗Na+, Mg2+, Al3+ and Si4+ are isoelectronic. The order of their ionic size is
- Na+ > Mg2+ < Al3+ < Si4+
- Na+ < Mg2+ > Al3+ > Si4+
- Na+ > Mg2+ > Al3+ > Si4+
- Na+ < Mg2+ > Al3+ < Si4+
General
✓✗Which one of the following is correct order of the size of iodine species?
- I+ > I– > I
- I– > I > I+
- I > I– > I+
- I > I+ > I–
General
✓✗What is the value of electron gain enthalpy of Na+ if IE1 of Na = 5.1 eV?
- –5.1 eV
- –10.2 eV
- +2.55 eV
- +10.2 eV
General
✓✗In the periodic table from left to right in a period, the atomic volume
- decreases
- increases
- remains same
- first decrease then increases.