Question

use the periodic table to identify the element indicated by each electron configuration by typing in the chemical symbol for the element.
1s²2s²2p⁶:
1s²2s²2p⁶3s²3p³:
1s²2s²2p⁶3s²3p⁶4s¹:
1s²2s²2p⁶3s²3p⁶4s²3d⁸:
1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s²4d³:
done

Explanation:

Step1: Calculate total electrons

The sum of the exponents in the electron - configuration gives the total number of electrons, which is equal to the atomic number for a neutral atom.
For $1s^{2}2s^{2}2p^{6}$: $2 + 2+6=10$. The element with atomic number 10 is Ne.

Step2: For $1s^{2}2s^{2}2p^{6}3s^{2}3p^{3}$

Calculate the total electrons: $2 + 2+6 + 2+3 = 15$. The element with atomic number 15 is P.

Step3: For $1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{1}$

Calculate the total electrons: $2 + 2+6 + 2+6 + 1=19$. The element with atomic number 19 is K.

Step4: For $1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2}3d^{8}$

Calculate the total electrons: $2 + 2+6 + 2+6 + 2+8 = 28$. The element with atomic number 28 is Ni.

Step5: For $1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2}3d^{10}4p^{6}5s^{2}4d^{3}$

Calculate the total electrons: $2 + 2+6 + 2+6 + 2+10 + 6+2 + 3=43$. The element with atomic number 43 is Tc.

Answer:

Ne
P
K
Ni
Tc