A. Increase
B. Decrease
C. Remain constant
D. No regular trend
Periodic Classification
Iodine is solid due to_________________?
A. Strong covalent bond
B. Large value of dipole moment
C. High polarizability
D. Strong hydrogen bonding
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
Noble gases are named so because they are__________________?
A. less reactive
B. Zero group elements
C. Having completely filled valence shell
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 following cannot exist in solution_________________?
A. O-2
B. H+
C. Cl-
D. Na+
Oxidation state of an atom represents____________________?
A. Number of electrons gained
B. Number of electrons lost
C. Apparent charge in compound
D. Its vacancies
Which one of the following element has highest oxidation state in its compounds ?
A. Cr
B. Mn
C. Sn
D. O
The longest period in the modern periodic table is___________________?
A. 6th
B. 7th
C. 2nd and 3rd both
D. 5th
Which element was not known when Mendeleev proposed his classification ?
A. Hydrogen
B. Sodium
C. Copper
D. Germanium
