Question

PLEASE HELP ME I NEED TO TURN THIS IN TODAY. WILL GIVE BRAINLIEST!! PLEASE HELP 

Answer 1

Answer is: Potassium (K)  is represented by the electron configuration in example B.

Potassium is a chemical element with atomic number 19 (number of electrons is 19).

Electron configuration of potassium is: ₁₉K 1s²2s²2p⁶3s²3p⁶4s¹.

Potassium is the alkali metal and has a single valence electron in the outer electron shell.

Answer 2

Answer: The element having given configuration is potassium.

Explanation:

Electronic configuration tells us about the number of electrons that are present in an atom. It also determines the atomic number of an element.

We are given:

Electronic configuration = $1s^22s^22p^63s^23p^64s^1$

Total number of electrons in the given element = (2 + 2 + 6 + 2 + 6 + 1) = 19

Element having atomic number '19' is potassium

Hence, the element having given configuration is potassium.