Question

question 24 (1 point)
1s 2 2s 2 2p 6 3s 2 3p 6 4s 1 is the electron configuration for what element?
a argon
b potassium
c calcium
d sodium

Explanation:

Step1: Calculate the total number of electrons

The electron configuration is \(1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{1}\).
Sum the exponents: \(2 + 2+6 + 2+6 + 1=19\)

Step2: Determine the element based on atomic number

The atomic number of an element is equal to the number of electrons in a neutral atom.
Since the number of electrons is 19, the element is potassium (K)

Answer:

B. Potassium