Periodic Table and Periodicity (Hard)
Advanced quiz covering atomic properties, periodic trends, ionization energies, electronic configurations, and diagonal relationships in the periodic table
Questions
Which of the following elements were placed correctly in Mendeleev’s periodic table?
- Argon and potassium
- Cobalt and nickel
- Tillerium and iodine
- Oxygen and fluorine
Which of the following elements belong to the actinide series?
- Ac, Th, Pa
- La, Ce, Pr
- F, CI, Pr
- Sc, Ti, V
Modern periodic table is based on the atomic number of elements. Which of the following experiments proved the significance of the atomic number?
- Millikan's drop experiment
- Moseley's work on X-ray spectra
- Bragg's work on X-ray diffraction
- Discovery of X-ray roentgen
The screening effect of s orbital electron is
- greater than p, but lesser than d and f electrons
- lesser than p, d and f electrons
- greater than p, d and f electrons
- equal to p, d and f electrons
Which of the following statements is/are not true about the diagonal relationship of Be and Al?
(A) Both react with NaOH to liberate hydrogen.
(B) Their oxides are basic.
(C) They are made passively by nitric acid.
(D) Their carbides give acetylene on treatment with water.
- Only (A)
- (B) and (C)
- Only (D)
- (B) and (D)
Which of the following is the correct order of polarising powers of cations?
- K+ < Be2+ < Mg2+ < Ca2+
- K+ < Ca2+ < Mg2+ < Be2+
- Ca2+ < Mg2+ < Be2+ < K+
- Be2+ < Mg2+ < Ca2+ < K+
- Be2+ < Ca2+ < Mg2+ < K+
Which of the following is correct about ionisation potential?
- It is independent of atomic radii.
- It increases with increase in atomic radii.
- It remains constant with increase in atomic radii.
- It decreases with increase in atomic radii.
Which of the following statements is true?
- Atomic radii of elements decrease gradually from left to right.
- Metallic character increases across a period.
- Chemical reactivity increases and then decreases across a period.
- Chemical reactivity increases across a period.
In which of the following arrangements is the order NOT according to the property indicated against it?
- Li < Na < K < Rb : Increasing metallic radii
- I < Br < F < Cl : Increasing electron gain enthalpies (with negative sign)
- B < C < N < O : Increasing first ionisation enthalpies
- Al3+ < Mg2+ < Na+ < F- : Increasing ionic size
Which of the following pairs contains an example of metalloid elements in the periodic table?
- Sodium and potassium
- Fluorine and chlorine
- Calcium and magnesium
- Boron and silicon
From the ground state of electronic configuration of various electrons, which will have the highest second ionisation energy?
- 1s2, 2s2, 2p6, 3s2
- 1s2, 2s2, 2p6, 3s1
- 1s2, 2s2, 2p6
- 1s2, 2s2, 2p5
Which of the following elements do not belong to the same group, but show chemical similarities?
- Mg, Ca
- K, Rb
- Be, Al
- B, Al
The electronic configurations of four elements are given as follows:
- [Xe] 6s1
2. [Xe] 4f14 5d1 6s2
3. [Ar]4s24p5
4. [Ar]3d74s2
Which of the following statements about these elements is not correct?
- 1 is a strong reducing agent.
- 2 is a d-block element.
- 3 has high electron affinity.
- 4 shows variable oxidation state.
The successive ionisation energy values for an element 'X' are given below:
(i) 1st 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 electrons for an atom of 'X'.
- 4
- 3
- 5
- 2
Pick out the statement(s) which is/are not true about the diagonal relationship of Li and Mg.
(i) Polarising powers of Li+ and Mg2+ are almost the same.
(ii) Both Li and Mg decompose water very quickly.
(iii) LiCl and MgCl2 are deliquescent.
(iv) Like Li, Mg does not form solid bicarbonates.
- (i) and (ii)
- (ii) and (iii)
- Only (ii)
- Only (i)
- Only (iii)