1. Elements in the same vertical group of the periodic table have same
A. Number of valence electrons
B. Atomic number
C. Atomic mass
D. Atomic volume
✅ The correct answer is option A.
Periodic Classification Of Elements MCQs
2. An element having a low value of ionization energy and low value of electron affinity is likely to belong to
A. Group IA
B. Group IB
C. Group VIIA
D. Group VIII
✅ The correct answer is option A.
3. Which set of elements is listed in order of increasing ionization energy?
A. Sb < As < S < P < Cl
B. Cl < Sb < P < As < S
C. As < Cl < P < S < Sb
D. Sb < As < Cl < S < P
✅ The correct answer is option A.
4. Which of the following always increases on going from top to bottom in a group?
A. Metallic character
B. Electronegativity
C. Oxidizing power
D. The tendency to get reduced
✅ The correct answer is option A.
5. Which of the p-block elements are not representative elements?
A. Alkali metals (I-A)
B. Group-14 elements (IV-A)
C. Group-18 elements (VII-A)
D. Halogens (VII-A)
✅ The correct answer is option C.
6. Among halogens, the highest boiling point is of
A. Florine
B. Chlorine
C. Bromine
D. Iodine
✅ The correct answer is option D.
7. Which of the following will not form the crystalline structure with oppositely charged ions
A. H+
B. H-
C. Mg2+
D. Ca2+
✅ The correct answer is option A.
8. Which statement is incorrect?
A. All the metals are the good conductor of electricity
B. All the metals are the good conductor of heat
C. All the metals form positive ions
D. All the metals from acidic oxides
✅ The correct answer is option D.
9. Periodic table provides a basic framework to study elements with respect to their
A. Physical properties
B. Chemical properties
C. Properties of their compounds
D. All
✅ The correct answer is option D.
10. The scientist who did not contribute to the construction of the periodic table?
A. Al-Razi
B. Moseley
C. Dobereiner
D. Democritu
✅ The correct answer is option D.