Electron Configuration

Choose the preferred noble gas electron configurations of silver (Ag).

• [Kr]5s²4d⁹

• [Kr]5s²4d¹⁰

• [Kr]5s¹4d¹⁰

• [Xe]5s¹4d¹⁰

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many valence electrons does iodine have?

• 53

• 1

• 7

• 8

Tags

NGSS.HS-PS1-1

Which rule/principle states that electrons in an orbital must have opposite spins?

• Aufbau

• Hund's

• Pauli Exclusion

• Mendeleev's

Which rule/principle states that orbitals must be singly occupied before doubly occupied?

• Aufbau

• Hund's

• Pauli Exclusion

• Mendeleev's

Which rule/principle states that electrons will fill the lowest energy orbital first?

• Aufbau

• Hund's

• Pauli Exclusion

• Mendeleev's

How many dots would be around magnesium's electron dot diagram?

• 1

• 2

• 12

• 3

Tags

NGSS.HS-PS1-1

Choose the preferred noble gas configuration of molybdenum.

• [Kr]5s¹4d⁵

• [Kr]5s²4d⁵

• [Kr]5s²4d⁴

• [Kr]5s¹4d¹⁰

Tags

NGSS.HS-PS1-1

Which element's are isoelectronic with one another?

• B³⁺ and Ne

• Ne and Ar

• S^2- and Si

• S^2- and Ar

Tags

NGSS.HS-PS1-1

According to Aufbau, which of the following orbitals will fill first?

• 3d

• 4s

• 5s

• 4d

Choose the element that contains electrons in the d sublevel

• Mg

• O

• Fe

• Ne