Question

Electronic composition of Na, Al, Cr & Ni​

Answer 1

Answer:

We'll put six in the 2p orbital and then put the remaining electron in the 3s. Therefore the sodium electron configuration will be 1s22s22p63s1. The configuration notation provides an easy way for scientists to write and communicate how electrons are arranged around the nucleus of an atom.

Explanation:

[Ar] 3d⁸ 4s

Therefore, the s-orbital will lose its electrons first, before the d-orbital, and so Ni2+ can be written as [Ar] 4s03d8 OR [Ar] 3d8

Answer 2

Answer:

Cleaning agents are the most critical aids of the housekeeping department in their day to day operations to keep the room and public area neat and clean.

When it comes to Cleaning chemicals/agents Taski or Diversey products are considered as the benchmark in the hospitality industry.

There are specific products which need to be used for each cleaning requirement and these cleaning agents are given specific codes eg: R1, R2, R3 (The letter 'R' Stands for 'Room Care'.) Etc. for ease of identification, recognition and use.