CH-655
Group 1 metals
Chemistry · Secondary 3 · Hard · Group 1 metals
The melting points of three Group I metals are shown:
Lithium: 181 °C
Sodium: 98 °C
Potassium: 64 °C
Which statement best explains this trend down the group?
Lithium: 181 °C
Sodium: 98 °C
Potassium: 64 °C
Which statement best explains this trend down the group?
- Melting point decreases because metallic bonds become weaker as atoms get larger.
- Melting point decreases because metallic bonds become stronger as atoms get larger.
- Melting point increases because there are more delocalised electrons in larger atoms.
- Melting point stays constant because all Group I metals have one valence electron.
Sign in to check your answer and see the hint and the worked explanation. Free on PrepLab High.