Electronic Configuration Concepts

The video tutorial introduces electronic configuration, explaining it as the arrangement of electrons in shells and subshells. It covers the basics of subshells (s, p, d, f) and their electron capacities. The instructor shares a fast trick for writing electronic configurations using a mnemonic involving SSP, SP, and DSP. The video demonstrates configuring elements with different electron counts, from 1 to 30, highlighting special cases like chromium and copper. The tutorial aims to simplify the process of writing electronic configurations for students.

What does the term 'configuration' refer to in the context of electronic configuration?

• The arrangement of neutrons in the nucleus

• The arrangement of protons in the nucleus

• The arrangement of atoms in a molecule

• The arrangement of electrons in shells and subshells

Which subshell can accommodate a maximum of 14 electrons?

• s subshell

• p subshell

• d subshell

• f subshell

What is the mnemonic used to remember the fast trick for electronic configuration?

• LMN, OPQ, RST

• XYZ, UVW, RST

• ABC, DEF, GHI

• SSP, SP, DSP

How many electrons can the 's' subshell hold?

• 2 electrons

• 6 electrons

• 10 electrons

• 14 electrons

For elements with up to 10 electrons, which type of configuration is used?

• SSPD type

• SPDF type

• SPD type

• SSP type

What is the electronic configuration of sodium (11 electrons) using the fast trick?

• 1s2 2s2 2p6 3d1

• 1s2 2s2 2p6 3s1

• 1s2 2s2 2p6 3p1

• 1s2 2s2 2p6 4s1

Which element is an example of an exceptional case in electronic configuration?

• Argon

• Calcium

• Chromium

• Potassium

In the case of chromium, why does one electron shift from 4s to 3d?

• To decrease the energy of the atom

• To make the 4s subshell more stable

• To make the 3d subshell half-filled and more stable

• To increase the energy of the atom

What is the electronic configuration of copper (29 electrons) using the fast trick?

• 1s2 2s2 2p6 3s2 3p6 4s1 3d10

• 1s2 2s2 2p6 3s2 3p6 4s2 3d9

• 1s2 2s2 2p6 3s2 3p6 4s2 3d10

• 1s2 2s2 2p6 3s2 3p6 4s1 3d9

What is the maximum number of electrons that can be accommodated in the 3p subshell?

• 14 electrons

• 10 electrons

• 6 electrons

• 2 electrons