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Number of unpaired electrons in Mn 4+ is: (1) 3 (2) 5 (3) 6 (4) 4 Ans: 3
moles
Phosphate of a metal M has the formula M 3 (PO 4 ) 2 The formula for its sulphate would be: (1) MSO 4 (2) M (SO 4
Explain in words why hydroboration leads to anti-Markovnikov addition of hydrogen whereas most electrophilic addtions to alkenes result in Markovnikov addition.
Comment on the validity of the following statements, giving reasons: (a) Thermodynamically an exothermic reaction is sometimes not spontaneous. (b) The entropy of steam is mo
The uncertainty in momentum of an electron is 1 x 10 -5 kgm/ s . The uncertainity in its position will be( h= 6.63 x 10 -34 Js) : (1) 5.28 x 10 -30 m
formula of acetic acid
Q. What do you mean by Dative Covalent Bonds?Dative Covalent Bonds Ans. Sometimes both electrons in the shared pair come from one atom. This type of bond is called a dativ
State about the Point imperfection They are imperfect point-like regions in the crystal. One or two atomic diameters is the typical size of a point imperfection. A substitu
Which statement is not correct for n=5, m=3: (1) l=4 (2) l=0, 1.3, s =+1/2 (3) l= 3 (4) All are correct Ans:l=4
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