Question

chapter 4 atomic structure
atomic orbitals (page 117)

1. is the following sentence true or false? an orbital is a region of space around the nucleus where an electron is likely to be found.

use this table to answer questions 8 and 9.

energy level	number of orbitals	maximum number of electrons
2	4	8
3	9	18
4	16	32

1. higher energy levels have ______ orbitals than lower energy levels do.
2. the maximum number of electrons in an energy level is ______ times the number of orbitals.

Explanation:

Step1: Analyze question 8

From the table, energy level 1 has 1 orbital, level 2 has 4, level 3 has 9 and level 4 has 16. So higher energy levels have more orbitals.

Step2: Analyze question 9

From the table, for energy level 1, 1 orbital has 2 electrons (2 = 2×1), for level 2, 4 orbitals have 8 electrons (8 = 2×4), for level 3, 9 orbitals have 18 electrons (18 = 2×9) and for level 4, 16 orbitals have 32 electrons (32 = 2×16). So the maximum number of electrons in an energy level is 2 times the number of orbitals.

Answer:

1. more
2. 2