Electron Configuration

Question 1

Transition Metal

Answer 1

d-block element that can form at least one stable ion
- with a incomplete d-subshell

Question 2

D subshell

Answer 2

• holds up to 10 electrons

Question 3

Scandium and Zinc

Answer 3

• are not transition elements as they don’t form a stable ion with an incomplete d-subshell

Question 4

8 transition elements configurations

Answer 4

• fill up singly first then double up due to electrons repelling
• want to be in lowest energy state/level

Question 5

Chromium and Copper Elements

Answer 5

• electron moves from the 4s orbital into the 3d
• creates half full (Cr) or full (Cu) sub-shell which is more stable than a complete 4s subshell

Question 6

Scandium

Answer 6

• only forms 1 stable ion: Sc3
• Sc3+ has an empty d-subshell
• not incomplete so not transition element

Question 7

Zinc

Answer 7

• only forms 1 stable ion: Zn2+
• has a full d-subshell
• not partially filled so not a transition element