Characterize EACH of the three given statements as being TRUE or FALSE and then indicate the collective true-false status of the statements using the choices provided. (1) The number of "electron dots" in the Lewis formula for the compound HNO₃ is 24.
(2) Atoms participating in coordinate covalent bonds generally do not form the "normal" number of covalent bonds expected for that element.
(3) Some molecules are nonpolar even though all bonds within the molecules are polar.

Question

Quizplus · Accepted Answer

(1) is true because there are 5 O atoms, each contributing 6 valence electrons (5 x 6 = 30), 1 N atom contributing 5 valence electrons, and 1 H atom contributing 1 valence electron (30 + 5 + 1 = 36). Since each electron dot represents a pair of electrons, the number of electron dots is 36/2 = 18.(2) is true because in a coordinate covalent bond, one atom contributes both electrons to the bond.(3) is true because the polarities of the individual bonds can cancel each other out, resulting in a nonpolar molecule.

Characterize EACH of the Three Given Statements as Being TRUE