Quiz on Atomic Orbitals and Lewis Structures

When the 1s orbitals of two hydrogen atoms combine to form a hydrogen molecule, how many molecular orbitals are formed?

• 1

• 2

• 3

• 4

• 5

When the ls orbitals of two hydrogen atoms combine to form a hydrogen molecule, which molecular orbitals are formed?

• One bonding molecular orbital only

• Two bonding molecular orbitals

• One bonding molecular orbital and one antibonding molecular orbital

• Two antibonding molecular orbitals

• Three bonding molecular orbitals

The following electron configuration represents _______. 1s2sp 3 2sp 3 2sp 3 2sp 3

• the ground state of boron.

• the sp3 hybridized state of carbon.

• the sp3 hybridized state of nitrogen.

• the ground state of carbon.

• an excited state of carbon.

Identify the atomic orbitals in the C-C sigma bond in ethyne.

• (2sp2, 2sp2)

• (2sp3, 2sp3)

• (2sp, 2sp)

• (2p, 2p)

• (2sp, 1s)

Which of the structures actually bear(s) a positive charge?

• I

• II

• III

• III & V

• IV & V

In which structure(s) below does the oxygen have a formal charge of +1?

• I only

• II only

• I and III

• I and IV

• I, III, and IV

Which structure(s) contain(s) an oxygen that bears a formal charge of +1?

• I and II

• III and IV

• V

• II

• I and V

Which of the following molecules or ions has a nitrogen with a formal charge of -1?

• NH

• NHH

• NHCH3

• NH3CCH3

• CH3CN

In which structure(s) below does nitrogen have a formal charge of +1?

• I

• II and IV

• III and V

• I and V

• V

Which of the following is an ion with a single negative charge?

• OH3C

• ONO

• ONO

• All of these

• None of these