Chapter 28, Problem 15Q

To determine

Part (a) To Determine:

The periodic table position of given atoms:$1s^{2}2s^{2}2p^5$

Answer to Problem 15Q

Solution:

The atoms with these electronic configurations are found in Group 17

Explanation of Solution

The group number of an element is determined by its subshell and valence electrons.

The p-subshell extends from Group 13 to 18. The penultimate electron therefore goes into group 17.

To determine

Part (b) To Determine:

The periodic table position of given atoms:$1s^{2}2s^{2}2p^{6}3s^2$

Answer to Problem 15Q

Solution:

The atoms with these electronic configurations are found in Group 2

Explanation of Solution

The group number of an element is determined by its subshell and valence electrons.The s-subshell is group 1-2. The last electron then enters Group 2.

To determine

Part (c) To Determine:

The periodic table position of given atoms:$1s^{2}2s^{2}2p^{6}3s^{2}3p^6$

Answer to Problem 15Q

Solution:

The atoms with these electronic configurations are found in Group 18

Explanation of Solution

The group number of an element is determined by its subshell and valence electrons.The p-subshell extends from Group 13 to 18. The last electron therefore goes into group 18.

To determine

Part (d) To Determine:

The periodic table position of given atoms:$1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^1$

Answer to Problem 15Q

Solution:

The atoms with these electronic configurations are found in Group 1

Explanation of Solution

The group number of an element is determined by its subshell and valence electrons.

The s-subshell is group 1-2. The first electron then enters Group 1.