Q 1. Which of the these does not reflect the periodicity of the elements
(A) Bonding behaviour (B) Electronegativity
(C) Ionisation energy (D) Neutron/proton ratio
Q 2. The elements configuration of halogen is
(A) ns2np6 (B) ns2np2
(C) ns2np5 (D) ns2
Q 3. In the periodic table, the element with atomic number 16 will be placed in the group
(A) Third (B) Fourth
(C) Fifth (D) Sixth
Q 4. Which one of the following belongs to representative group of elements in the periodic table-
(A) Lanthanum (B) Argon
(C) Chromium (D) Aluminium
Q 5.An element with atomic number 20 will be placed in which period of the periodic table
(A) 4 (B) 3
(C) 2 (D) 1
Q 6.The electronic structure (n-1) d1-2 ns 0-1 is characteristic of –
(A) Transition elements (B) Lanthanides
(C) Actinides (D) Rare gases
Q 7. Which of the following pairs has both member from the same period of the periodic table
(A) Na – Ba (B) Na – Na
(C) Ca – Cl (D) Cl – Br
Q 8. Chemical property of Li and Mg are similar because
(A) These belong to same group
(B) Both ionisation potential is same
(C) Shows diagonal relationship
(D) Both electron affinity is same
Q 9. Aluminium is diagonally related to (in periodic table)
(A) Li (B) C
(C) B (D) Be
Q 10. Which of the following show diagonal relationship
(A) B and Si (B) B and Al
(C) B and Ga (D) B and C
Q 11. An element has electronic configuration 1s2 2s2 2p6 3s2 3p4 . Predict their period, group and block
(A) Period = 3rd, block = p, group = 16
(B) Period = 5th, block = s, group = 1
(C) Period = 3rd, block = p, group = 10
(D) Period = 4th, block = d, group = 12
Q 12. Which of the following pair has elements containing same number of electron in the outermost orbit
(A) N , O (B) Na , Ca
(C) As , Bi (D) Pb , Sb
Q 13. Which pair of atomic number represents S – block elements (A) 7, 15 (B) 6, 12 (C) 9, 17 (D) 3, 12
Q 14. Which pair of elements has same chemical properties
(A) 13, 22 (B) 3, 11
(C) 4, 24 (D) 2, 4
Q 15. All the elements in a group in the periodic table have the same
(A) Atomic number (B) Electronic configuration
(C) Atomic weight (D) Number of elements in the outermost shell or number of elements for bonding
Q 16. 1s2 2s2 p6 3s2 is the electronic configuration of the metal-
(A) Na (B) Mg
(C) Fe (D) Al