Question

When completing the orbital diagram for the element argon, which of the following statements is correct?

a) There are six electrons in the n shell.
b) Argon has a completely filled valence shell.
c) The electron configuration is 1s² 2s² 2p⁶ 3s² 3p⁶.
d) Argon exhibits paramagnetic behavior.

Answer 1

The correct statement is that Argon has a completely filled valence shell.

Step-by-step explanation:

The correct statement when completing the orbital diagram for the element argon is b) Argon has a completely filled valence shell. Argon (Z=18) has 18 electrons, with the 10 electrons filling the first and second shells, and the remaining 8 electrons going to the third shell. The outermost shell, known as the valence shell, is fully occupied, which makes argon a member of Group 18 elements, also known as the noble gases. These elements have stable electron configurations with completely filled valence shells, making them chemically inert and unlikely to form chemical bonds with other atoms.