BRILLIANT PUBLICATION|Exercise LEVEL - II (Assertion-Reason)|5 Videos
CHEMICAL BONDING
BRILLIANT PUBLICATION|Exercise LEVEL-III ( Linked Comprehension Type )|12 Videos
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Write the reasons of followings: a) Aluminium is a very good reducing agent. b) Copper is a better conductor of electricity. But aluminium is widely used for making electric wires. c) Alumina is dissolved in molten cryolite at the time of electrolysis.
In the following question, an Assertion (A) is followed by a corresponding Reason (R). Use the following keys to choose the appropriate answer. Assertion : Fluorine molecule has bond order one. Reason : The number of electrons in the antibonding molecular orbitals is two less than that in bonding molecular orbitals.
Which of the following isnot correct regarding C_2 molecule? : C_2 molecule has been found to exist in vapour phase, It has a total 12 electrons, out of which 8 electrons occupy bonding orbitals while 4 electrons occupy antibonding orbitals., The molecule is paramagnetic., C_2 molecule contains double bond and both are pi bonds
Assertion : All compounds having C=C bond exhibit geometrical isomerism . Reason : Rotation about C=C bond is restricted
Assertion : Cyanides R - C -= N : are very much weaker bases than aliphatic bases. Reason : This is due to the fact that as the nitrogen atom becomes more multiply bonded, the lone pair of electrons are accommodated in an orbital that has more 'S' character. The electron pair is thus drawn closer to the nitrogen nucleus, and held more lightly by it.
BRILLIANT PUBLICATION-CHEMICAL AND IONIC EQUILIBRIUM-Level - III (Linked Comprehension Type Questions)