Question

20 POINT QUESTION

The image compares the arrangement of electrons in two different neutral atoms.



Which of the following best explains the position of the two atoms in the periodic table?


Both atoms have an estimated Zeff of 1; therefore, Atom D is to the right of Atom E in the same period.


Both atoms have Zeff of 1; therefore, Atom D is above Atom E in the same column because of the additional energy level.


Atom D has an estimated Zeff of 1 and is therefore to the left of Atom E, which has a Zeff of 9.


Atom D has an estimated Zeff of 1 and is therefore below Atom E in the same column, which has a Zeff of 9.

Answer 1

Both atoms have Zeff of 1; therefore, Atom D is above Atom E in the same column because of the additional energy level.

Step-by-step explanation:

Both atoms have valence electron of 1 which makes them to be in the same group 1 but atom E has four valence shell/energy while atom D has only three.

Due to the difference in their electronic shells/energy, atom D will be directly above atom E in the periodic table.