QUANTUM MECHANICAL MODEL

If the first and second energy levels of an atom are full, then what would be the total number of electrons in the atom?

• 6

• 8

• 10

• 18

Tags

NGSS.HS-PS1-1

Which of the following sub-levels is correctly designated?

• 1p⁵

• 3f⁹

• 2p⁶

• 3d¹¹

Tags

NGSS.HS-PS1-1

Each sub level has its maximum number of orbitals. How many orbitals are in the third principal energy level?

• 3

• 6

• 9

• 12

Which of the following main energy levels of an atom can accommodate a maximum of 18 electrons?

• 1^st energy level

• 2^nd energy level

• 3^rd energy level

• 4^th energy level

How many orbitals are present in the 4p sub level?

• 7

• 5

• 4

• 3

If the 1^st energy level is already filled up with 2 electrons, what level should be filled up next?

• Second

• Third

• Fourth

• Fifth

Tags

NGSS.HS-PS1-1

According to Pauli Exclusion Principle, how many electrons may occupy a single orbital?

• 1

• 2

• 4

• 8

“An electron should occupy the lowest energy level first before the higher energy level” is stated in what rule?

• Hund's rule

• Pauli Exclusion Principle

• Aufbau Principle

• All of the above.

What rule states that single electrons must occupy each equal-energy orbital before additional electrons can occupy the same orbitals.

• Hund's rule

• Pauli Exclusion Principle

• Aufbau Principle

• None of the choices.

Which of the following statement is wrong?

• Two electrons must occupy each equal energy orbital before additional electrons can occupy the same orbitals.

• A maximum of two electrons may occupy the same orbitals.

• In filling up orbitals, electron occupies the lowest energy orbital first before the higher energy orbitals.

• None of the choices.

Tags

NGSS.HS-PS1-1