Which statements about the structure of the periodic table are true? the periodic table has an irregular shape because it has more periods than groups. the inner transition elements are placed at the bottom of the periodic table for easy viewing. the periodic table has horizontal groups and vertical periods, giving it a regular rectangle shape. the distribution of electrons in energy levels is responsible for the shape of the periodic table. nonmetals take up more than half the area of the periodic table.

The correct statements about the structure of periodic table are:

1. The inner transition elements are placed at the bottom of the periodic table for easy viewing.  

2. The distribution of electrons in energy levels is responsible for the shape of the periodic table.

Periodic table has more groups than periods.

And it has more metals than non metals.

B) The inner transition elements are placed at the bottom of the periodic table for easy viewing.

D) The distribution of electrons in energy levels is responsible for the shape of the periodic table.

#platofam

answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.