Elements with similar chemical properties appear in the_________________?
A. Same family
B. Same period
C. p block elements
D. Right upper corner
Periodic Classification
Concept of Triads was introduced by_______________?
Concept of Triads was introduced by_______________?
A. Dobereiner
B. Newland
C. Mendeleev
D. Al-Razi
Periodic table provides a basic framework to study elements with respect to their__________________?
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_________________?
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 ?
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)
Elements in the same vertical group of the periodic table have same_______________?
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