Which is least acidic ? SbH(3), PH(3), N...

Which is least acidic ? `SbH_(3), PH_(3), NH_(3), AsH_(3)`

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A compound which is most basic is obviously least acidic. Since `NH_(3)` is most acidic, therefore, it is least acidic.

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Arrange the following in the increasing order of the properties stated against them. (a) (i) NH_(3) , (ii) PH_(3) , (iii) AsH_(3) , (iv) SbH_(3) -boiling point. (b)(i) Bi^(3+) ,(ii) Sb^(3+) , (iii) As^(3+) -stability of +3 oxidation state. ( c)(i) NH_(3) , (ii) PH_(3) , (iii) AsH_(3) , (iv) SbH_(3) , (v) BiH_(3) -reducing character.

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Distinguish between a polar bond and a polar molecule To which does the term dipole refer? (b) Which is having the higher b.pt: Br_(2) or ICI (c ) Can a molecule have a dipole moment if it has no polar covalent bonds (ii) How is it possible for a molecule to have polar bonds but no dipole moment? (d) Arrange in decreasing polarity of bonds SbH_(3),AsH_(3),PH_(3),NH_(3) , .

Which of the following orders is correct? (1) SbH_(3)gt NH_(3) gt AsH_(3) gt PH_(3)-" Boiling Point" (2) NH_(3) gt PH_(3) gt AsH_(3) gt SbH_(3)-" Thermal Stability" (3) NH_(3) gt PH_(3) gt AsH_(3) gt SbH_(3) - "Basic Character" (4) NH_(3) gt PH_(3) gt AsH_(3) gt SbH_(3)- "Bond Angle"

Arrange the following in increasing order of bond angle PH _(3), SbH_(3), AsH_(3), NH_(3)

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