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.Management Sciences
Category: Periodic Classification
Halides in which halogen atoms act as a bridge between two atoms of the other element are called___________________?
A. Covalent halides
B. Electronegative halides
C. Polymeric halides
D. Polymeric hydrides
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
The atoms of same element having same atomic number but different mass number are called____________________?
A. Isobars
B. Isomers
C. Isotopes
D. Isotropes
The property which increases upto group IV-A then decreases on wards_______________?
A. Ionization energy
B. Atomic radii
C. Melting & boiling points
D. Atomic volume
In which of the following pairs are elements belonging to the same group ?
A. Boron & Beryllium
B. Nitrogen & Phosphorous
C. Magnesium & Aluminium
D. Gallium & Helium
Hydrogen resembles with carbon because of having________________?
A. Same number of electrons in the valence shell
B. Similar physical state
C. Remarkable reducing properties
D. Homovalent (show same valency)
Deuterium reacts with oxygen to form________________?
A. Hard water
B. Heavy water
C. Soft water
D. Water gas
Addition of 2nd electron to a uni negative ion is always____________________?
A. Exothermic
B. Endothermic
C. Data is insufficient
D. Unpredictable
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