Which is the electron configuration for zinc?

Explanation:

There are different ways to express the electronic configuration of zinc.

We are going to use the shell notation and the sublevel notation.

Zinc as an element belongs to the transition metal groups found in the d-block of the periodic table.

The element is made up of 30 electrons.

Shell configuration  = 2 8 18 2

Sublevel notation  = 1s² 2s² 2p⁶  3s² 3p⁶ 3d¹⁰ 4s²

Step-by-step explanation:

Given is a two way table with rows representing lunch and columns representing riding bus.

The row is divided as ride bus and do not ride bus and column as bring lunch and do not bring lunch.

We find from the table the total number of students who bring lunch =

I column total = 95

The total number of students who ride bus = I row total = 75

Difference = 95-75 =20

Hence 20 more students bring lunch than students who ride bus