Chemistry I - Chapter 11 Test - MC Part

According to Bohr, electron cannot reside at ______ in the figure.

• point A

• point B

• point C

• point D

The region outside the nucleus where an electron can most probably be found is the

• electron configuration.

• quantum.

• s sublevel.

• electron cloud.

How many empty orbitals are there in an atom of Zinc?

• 0

• 1

• 2

• 3

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The main energy levels of an atom are indicated by the

• orbital quantum numbers.

• magnetic quantum numbers.

• spin quantum numbers.

• principal quantum numbers.

A spherical electron cloud surrounding an atomic nucleus would best represent

• a s orbital.

• a p orbital.

• a combination of p orbitals.

• a combination of s and p orbitals.

The major difference between a 1s orbital and a 2s orbital is that

• the 2s orbital can hold more electrons.

• the 2s orbital has a slightly different shape.

• the 2s orbital is at a higher energy level.

• the 1s orbital can have only one electron.

The number of possible different sublevel shapes for the third energy level is

• 1.

• 2.

• 3.

• 4.

The TOTAL number of orbitals that can exist at the second main energy level is

• 2.

• 3.

• 4.

• 8.

If n is the principal quantum number of a main energy level, the number of electrons in that energy level is

• n.

• 2n.

• n².

• 2n².

At n=1, the total number of electrons that could be found is

• 1.

• 2.

• 6.

• 18.