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Give reasons for the following:
a. Molten aluminium bromide is poor conductor of electricity.
b. Nitric oxide becomes brown when released in air.
c. PCl
What are ferrites? Ferrites are ceramic compounds having trivalent metal having three valence electrons iron and oxide of divalent element i.e. metals having two free electrons
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Which of the following has the least energy: (1) 2p (2) 3p (3) 2s (4) 4d Ans: 2s
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An element X with the electronic configuration 1s 2 , 2s 2 , 2p 6 , 3s 2 , would be expected to form the chloride with the formula: (1) XCl 3 (2) Xcl 2 (3) XCl
According to Heisenberg's uncertainty principle, the product of uncertainties in position and velocities for an electron of mass 9.1x 10 -31 kg is: (1) 2.8x 10 -3 m 2 -s -1
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