Question

PLEASE HELP ME!!

Determine which of the listed electronic formulas correspond to the ground state and which to the excited state of the atom. Recognize which chemical element these configurations belong to?
a) 1s²2s²
b) 1s²2s²2p⁵
c) 1s²2s²2p⁶3s²3p⁶3d⁹4s²
d) 1s²2s²2p⁶3s²3p⁴
e) 1s²2s²2p⁶3s²3p³3d¹​​

Answer 1

#1

Ground state

• 1s²2s²
• This is Beryllium (Be)

#b

Ground state

• 1s²2s²2p⁵
• Fluorine (F)

#c

Excited state of Cupper(Cu)

General state

• [Ar]3d¹⁰4s¹

But one goes to 4s and makes it 4s² to react .

#d

Ground state

• [Ne]3s²3p⁴

Its sulphur

#e

Same element Sulphur (S) but excited state

As one electron is on d orbital .

Answer 2

I suppose it is C my friend

Step-by-step explanation:

Hope this helps!