Question

Indicate the direction of polarity for each of the covalent bonds of the following compounds using the δ+/δ− notation. Match the notation in the left column to the appropriate blanks in the sentences on the right.

In the compound HI , H has ____ and I has ____. In the compound NaOH, O has _____ and H has_____.

In the compound BCl3, B has_____ and Cl has_____.

In the compound PdBr2, Pd has ____ and Br has ____.

In the compound CH3Li, C has ____ and H has____.

In the compound H2S, H has____ and S has ____.

Answer 1

In general:

Cation + Anion --> positve charge - negative charge

In general, metals tend to lose and nonmetals tend to gain (thumb rule!)

In the compound HI , H has δ+ and I has δ-.

In the compound NaOH, O has δ- and H δ+.

In the compound BCl3, B has δ+ and Cl has δ-.

In the compound PdBr2, Pd has δ+ and Br has δ-

In the compound CH3Li, C has δ- and H has δ-

In the compound H2S, H has δ+ and S has δ-