A. Al-Razi
B. Moseley
C. Dobereiner
D. Democritus
0
Among halogens the highest boiling point is of___________________?
0
Which of the following always increases on going from top to bottom in a group ?
A. Flrorine
B. Chlorine
C. Bromine
D. Iodine
0
An element having low value of ionization energy and low value of electron affinity is likely to belong to__________________?
A. Metallic character
B. Electronegativity
C. Oxidizing power
D. Tendency to get reduced
0
Which of the following cannot exist in solution_________________?
A. Group IA
B. Group IB
C. Group VIIA
D. Group VIII
0
Which one of the following element has highest oxidation state in its compounds ?
A. O-2
B. H+
C. Cl-
D. Na+
0
True increasing order of acidity of the oxides of Mn is_________________?
A. Cr
B. Mn
C. Sn
D. O
0
Which of the following possesses maximum hydration energy ?
A. MnO < MnO2 < Mn2O7
B. Mn2O7 > MnO2 > MnO
C. MnO2 > MnO > Mn2O7
D. MnO2 > Mn2O7 > MnO
0
Melting points of VII-A group elements down the group ____________________?
A. Na+
B. K+
C. Mg+2
D. Ca+2
0
Higher value of electron affinity means__________________?
A. Increase
B. Decrease
C. Remain constant
D. No regular trend
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