Home
Class 12
CHEMISTRY
Explain, why NH3 is basic while BiH3 is ...

Explain, why `NH_3` is basic while `BiH_3` is only feebly basic.

Text Solution

Verified by Experts

Both N in `NH_3` and Bi in `BiH_3` have a lone pair of electrons on the central atom and hence should behave as Lewis bases, But `NH_3` is much more basic than `BiH_3`. This can be explained on the basis of electron density on the central atom. Atomic size of N (70 pm) is much smaller than that of Bi (148 pm), therefore, electron density on the N-atom is much higher than that on Bi-atom. Consequently, the tendency of N in `NH_3` to denote its pair of electrons is much higher than that of Bi in `BH_3`. Thus, `NH_3` is much more basic than `BiH_3`
Promotional Banner

Topper's Solved these Questions

  • THE P-BLOCK ELEMENTS

    U-LIKE SERIES|Exercise CASE BASED/ SOURCE-BASED INTEGRATED QUESTIONS|19 Videos

  • THE P-BLOCK ELEMENTS

    U-LIKE SERIES|Exercise MULTIPLE CHOICE QUESTIONS|22 Videos

  • THE P-BLOCK ELEMENTS

    U-LIKE SERIES|Exercise SELF ASSESSMENT TEST ( SECTION A)|7 Videos

  • THE D-AND F-BLOCK ELEMENTS

    U-LIKE SERIES|Exercise SELF ASSESSMENT TEST (SECTION A ) MULTIPLE CHOICE QUESTIONS (CHOOSE THE CORRECT OPTION)|7 Videos

Similar Questions

Explore conceptually related problems

Explain why is NH_(3) basic while PH_(3) is feebly basic in nature.

PH_3 is less basic than NH_3 .

Basicity 3

AICI_(3) is covalent while AIF_(3) is ionic This can be justified on the basic of .

Assertion: NO is an acidic oxide while CrO_(3) is a basic oxide. Reason: Oxides of metals are generally basic and oxides of non-metals are generally acidic.

Explain why bond angle of NH_(3) is greater than NF_(3) while bond angle of PH _(3) is less than that of PF _(3),