Problem: Which of the following can act as a Lewis base? Cr3+, SO3, CH3NH2, BeCl2A. SO3 onlyB. SO3, CH3NH2C. CH3NH2 onlyD. CH3NH2, BeCl2E. Cr3+, BeCl2

FREE Expert Solution

Lewis base is an electron pair donor.

Some characteristics of a Lewis base:

  • Compounds that have lone pair(s) on a central element can act as Lewis bases. 
  • Compounds that possess a negative charge can act as Lewis Bases.


A. Cr3+

  • positively charged 
    • cannot be a Lewis base

B. SO3

  • No lone pairs in the central atom, S
  • Not negatively charged
    • cannot be a Lewis base


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Problem Details

Which of the following can act as a Lewis base? Cr3+, SO3, CH3NH2, BeCl2

A. SO3 only

B. SO3, CH3NH2

C. CH3NH2 only

D. CH3NH2, BeCl2

E. Cr3+, BeCl2

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Q.Which of the following can act as a Lewis base?Cr3+, SO3, CH3NH2, BeCl2 a. Cr3+, BeCl2 b. SO3 onlyc. CH3NH2, BeCl2 d. SO3, CH3NH2 e. CH3NH2 only
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