Question

write the ground-state electron configuration for each element. part 1 of 2 s: part 2 of 2 ca:

Explanation:

Part 1: Sulfur (S)

Step 1: Determine atomic number

Sulfur has an atomic number of 16, so it has 16 electrons.

Step 2: Apply Aufbau principle

Fill orbitals in order: \(1s\), \(2s\), \(2p\), \(3s\), \(3p\).

• \(1s^2\) (2 electrons)
• \(2s^2\) (2 electrons, total 4)
• \(2p^6\) (6 electrons, total 10)
• \(3s^2\) (2 electrons, total 12)
• \(3p^4\) (4 electrons, total 16)

Part 2: Calcium (Ca)

Step 1: Determine atomic number

Calcium has an atomic number of 20, so it has 20 electrons.

Step 2: Apply Aufbau principle

Fill orbitals in order: \(1s\), \(2s\), \(2p\), \(3s\), \(3p\), \(4s\).

• \(1s^2\) (2 electrons)
• \(2s^2\) (2 electrons, total 4)
• \(2p^6\) (6 electrons, total 10)
• \(3s^2\) (2 electrons, total 12)
• \(3p^6\) (6 electrons, total 18)
• \(4s^2\) (2 electrons, total 20)

Answer:

s:
Part 1 (S): \(1s^2 2s^2 2p^6 3s^2 3p^4\)
Part 2 (Ca): \(1s^2 2s^2 2p^6 3s^2 3p^6 4s^2\)