What is incorrect about the atomic orbital arrangement of electrons in this model? how should they be arranged?

The model is incorrect because the first main energy level can only have two electrons and it shows five.

The electrons should be arranged in two concentric circles, each for one main energy level: 2 electrons must be on the inner circle (first energy level) and 3 electrons on the outer circle (second main energy level).

Explanation:

This model is used to indicate the electrons according to the main energy level (main quantum number).

The main energy levels or quantum numbers anre 1, 2, 3, 4, 5, 6, 7,

And these are the number of electrons that can be on each of those energy levels:

Main quantum number          maximim number of electrons

1                                                   2
2                                                   8
3                                                 18
4                                                 32

The atom shown has  five electrons. Accorgin with the table above, only two of those electrons may be in the first main energy level, the other three go on the second level.

Therefore, the model is incorrect because the first main energy level can only have two electrons and it shows five.

This model must show two concentric circles to arrange the five electrons,each for every main energy level or main quantum number, then 2 electrons must be arranged on the inner circle and 3 electrons on the outer circle.

Mass is the amount of matter in an object.  weight is the measurement of the pull of gravity on an object.  say for example, you travel to the moon which has a different gravitational field compared to the gravitational field of earth. (gravitational fields: earth = 1, moon = 0.165)  now when you are on the moon, the pull of gravity on you is different than on the earth. and as weight is the measurement of the pull of gravity on an object, that means yes, your weight can and will change on the moon.  however, on the moon, on earth or even on jupiter, the amount of mass inside of you remains the same. meaning your physical mass remains constant.  in conclusion it is possible for your weight to change as your mass remains constant.