Electron Configuration Quiz

An element with the electron configuration of 1s 2s 2p would have a combining power of

• 0

• 2

• 6

• 8

The electron configuration of carbon atom in its excited state is [C]

• 1s 2s 2px 2py¹

• 1s 2s 2px 2py

• 1s 2s 2px 2py¹2pz¹

• 1s 2s¹ 2px 2px 2pz

Which of the following noble gases has electronic structure similar to that of N in NN₁? [¹N]

• He

• Ne

• Ar

• Kr

The number of orbitals in a p-sub level of an atom is

• 2

• 3

• 5

• 6

Which of the following ions has an electron configuration different from the others?

• Cr

• O

• 12Mg''

• 1A

The electron configuration of Fe is

• [Ar] 4s 3d''

• [Ar] 4s 3d

• [Ar]4s¹3d

• [Ar]4s 3ds

Which of the following arrangements represents the correct order of electronic energy level?

• 1s 2p 2s 3p 3s 3d 4s

• 1s 2s 2p 3s 3p 3d 4s

• 1s 2s 2p 3s 3p 4s 3d

• 1s 2s 3s 2p 3p 4s 3d

How many electrons are in the ion F [F]

• 8

• 9

• 10

• 19

The valence electrons of Mg are in the

• 3s orbital

• 2p orbital

• 2s orbital

• 1s orbital

Which of the following electron configurations represents the transition element chromium (Cr)?

• 1s 2s 2p 3s 3p 4s 3d

• 1s 2s 2p 3s 3p* 3d''

• 1s 2s 2p 3s 3d 4s¹

• 1s 2s 2p 3s 3p 4s¹ 3d²