Question

question 5 (12 points)
which element has the ground state electron configuration represented by the noble - gas notation....
ar 4s¹, 3d¹⁰
a copper
b nickel
c gallium
d zinc
e silver

Explanation:

• Argon (\([Ar]\)) has 18 electrons.
• The \(4s^1\) sub - shell has 1 electron and the \(3d^{10}\) sub - shell has 10 electrons.
• Total number of electrons \(=18 + 1+10=29\).
• The element with atomic number 29 is copper.

Answer:

a. Copper