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
Which of the following will not form crystalline structure with opporitely charged ions_________________?
(A) H+
(B) H-
(C) Mg2+
(D) Ca2+
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 (VIII-A)
(D) Halogens (VII-A)
Melting points of VII-A group elements down the group ____________________?
(A) Increase
(B) Decrease
(C) Remain constant
(D) No regular trend
Higher value of electron affinity means__________________?
(A) Atom will lose electron easily
(B) Atom will gain electron easily
(C) Atom may form di-positive ion
(D) The reason is unknown
Shielding effect across the period_________________?
(A) Increases
(B) Decreases
(C) Can not be predicted
(D) Remains constant
The atoms of same element having same atomic number but different mass number are called____________________?
(A) Isobars
(B) Isomers
(C) Isotopes
(D) Isotropes
An element has electronic conviguration 1s2 2s2 2p2. It belongs to__________________?
(A) Group II-A
(B) Group IV-A
(C) Group VII-A
(D) Group VI-A