use the periodic table in the tools bar to complete the electron configurations for the following elements…

use the periodic table in the tools bar to complete the electron configurations for the following elements: lithium (li): 1s^a2s^b a = 2 b = 1 complete beryllium (be): 1s^c2s^d c = d = done

use the periodic table in the tools bar to complete the electron configurations for the following elements: lithium (li): 1s^a2s^b a = 2 b = 1 complete beryllium (be): 1s^c2s^d c = d = done

Answer

Explanation:

Step1: Determine beryllium's atomic number

Beryllium has an atomic number of 4, meaning it has 4 electrons.

Step2: Fill electron - shells

The first shell (1s) can hold a maximum of 2 electrons. After filling the 1s shell with 2 electrons, we have 2 remaining electrons. These 2 remaining electrons go into the 2s shell.

Answer:

C = 2 D = 2