It can be called a table. In the context of applications software, you could also say a spreadsheet.
No. A spreadsheet grid is made of rows and columns, not diagonals.
a table
Generically it is called a table.
Rows and Columns and the "boxes" are called cells
A table.
Is grid of columns ,rows and cells
periods are the rows and families are the columns
An example is the grid of a spreadsheet. A spreadsheet uses vertical columns and horizontal rows. Columns are lettered A, B, C, and so on. Rows are numbered 1, 2, 3, and so on. A1 is the address of the first cell (top left-hand corner).
It can be a table or a spreadsheet. They can also be called datasheets or worksheets.
It is true that periodic table is divided into rows and columns. The rows are called periods and columns are called groups.
There are 9 rows and 9 columns. There is 81 individual squares in one grid.
As with any grid, the periodic table has rows running left to right, and columns running up and down. The rows are called PERIODS and the columns are called GROUPS.