Lewis Dot Structure

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(A) H2O(B) NH3(C) BH3(D) CH4(E) SiH4 Has two lone pairs of electrons

A H2O

The electron-dot structure (Lewis structure) for which of the following molecules would have two unshared pairs of electrons on the central atom?

A H2S

(A) H2O(B) NH3(C) BH3(D) CH4(E) SiH4 Has a central atom with less than an octet of electrons

C BH3

Which of the following is an isomer of CH3OCH3 ?

C CH3CH2OH

(A) CH3CH2CH2CH3(B) CH3CH2CH2OH(C) CH3COCH3(D) CH3COOH(E) CH3CH2CH2NH2 Is isomeric with CH3CH2CHO

C CH3COCH3

Which of the following molecules contains only single bonds?

D C6H6

NH3 reacts with BF3 to form a single species. Which of the following structural diagrams is the most likely representation of the product of the reaction?

D N connects to B


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