2. 1. Identify the group, period, and block in which the element that has the electron configuration [Xe]6s2 is located.

3. [Xe]6s2 The element is in the s block, Group 2 Period 6 Ba

4. 2. Write the electron configuration for the Group 1 element in the third period.

5. 1s22s22p63s1 or [Ne]3s1

6. 3. Identify the group, period, and block in which the element that has the electron configuration [Kr]5s1 is located.

7. Ans. Group 1, fifth period, s block Element: Rb
[Kr]5s1
Ans. Group 1, fifth period, s block Element: Rb

8. 4. Write the group configuration for the Group 2 elements.

9. ns2
Period
Group
Block

10. 6. Write the Noble-gas notation for the Group 2 element in the fourth period.

11. [Ar]4s2 Ca

12. 7. Identify the period, block, and group in which the element that has the electron configuration [Ar] 4s23d8 is located.

13. [Ar] 4s23d8
Fourth period, d block, Group 10

14. 8. Write the condensed electron configuration for the Group 12 element in the fifth period.

15. Write the condensed electron configuration for the Group 12 element in the fifth period.
[Kr] 5s24d10