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Which orbital is dumb-bell shaped : (1) s -orbital (2) p -orbital (3) d -orbital (4)f -orbital Ans: p -orbital
which compounds will dissolve in alkaline solution after it has undergone reaction with hinsberg reagent
reversible and irreversible cell with example
Amines - Nitrogen Containing Compounds 1. Amines are observed like derivatives of ammonia where one, two or all three hydrogen atoms are changed by alkyl or aryl group. 2. A
Which of the following explains the sequence of filling the electrons in different shells: (1) Hund's rule (2) Octet rule (3) Aufbau principle (4) All of these Ans
The principal quantum number represents : (1) Shape of an orbital (2) Distance of electron from nucleus (3) Number of electrons in an orbit (4) Number of orbitals in an
Be 2+ is isoelectronic with: (1) Mg 2+ (2) Na + (3) Li + (4) H + Ans: Li +
definition of milli equivalent
Q. Illustrate modern atomic model of De Broglie? 1. Electrons inhabit the space surrounding the nucleus and can exist in several discrete principal energy levels each designate
What are the genral properties of s-block elements
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