Quantum Number and Electron Configuration

According to the Aufbau Principle, which sublevel should starting filling with electrons after 5s?

• 6s
• 5p
• 4d
• 3f

Identify the following element:
1s²2s²2p⁶3s²3p⁶4s²3d¹⁰

• nickel
• copper
• zinc
• gallium

Tags

NGSS.HS-PS1-1

The second energy level (n=2) contains a total of 5 electrons...how many more electrons can fit in the 2nd energy level?

• 0
• 3
• 5
• 7

Identify the element whose electron configurations ends with 5p³

• As
• Te
• Sb
• Sn

Tags

NGSS.HS-PS1-1

Which of the following quantum number sets is not allowed?

• { 3, 2, +1, -1/2 }
• { 5, 3, -1, +1/2 }
• { 12, 1, +2, +1/2 }
• { 7, 6, -5, -1/2 }

This "rule" of Quantum Chemistry states that no 2 electrons in an atom can be in the exact same state...each electron in an atom can be described by a unique set of quantum numbers.

• Hund's Rule
• Heisenberg Uncertainty Principle
• Aufbau Principle
• Pauli Exclusion Principle

According to the Aufbau Principle, which sublevel should starting filling with electrons before the 3p sublevel?

• 3s
• 2p
• 4s
• 4p

How many valence electrons are in an atom of sulfur?

• 2
• 4
• 6
• 8

Tags

NGSS.HS-PS1-1

What is the correct representation for an orbital which has an "n" value of 4 and an "l" value of 2?  

• 4d
• 4s
• 4f
• 4p

How many orbitals in the d subshell? 

• 1
• 7
• 3
• 5