CHM303
Having studied the electronic configuration of Calcium, which orbital has highest energy
Answer: 3d
Which of the following statement is incorrect about the f-block elements
Answer: they have nothing in common with d-block elements
Of the options given below, which is the safest way to dispose of Na metal?
Answer: add small amounts of na to propan- 2-ol
The following are required for the direct reaction of xenium with fluorine except
Answer: water gas
Which statement is incorrect about the group 2 metals?
Answer: they all form an oxide mo which crystallizes with an nacl lattice
Compounds formed when transition metals trap small atom in their crystal lattice are
Answer: interstitial compounds
If the experimentally determined magnetic moment (Âps) of [Cr(H20)6]2+ is 4.80 BM, what will be the calculated value and by how much is it greater than experimental value
Answer: 4.90 bm and 0.10
 Which of the following is incorrect about transition metals?
Answer: they strengthen the bond and increase activation energy
Peroxide and superoxide ions are, respectively:
Answer: diamagnetic and paramagnetic
Why is CuS04 blue in colour and ZnS04 is colourless ?
Answer: because zn has fully filled 3d orbital in its sulfate
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