Question

Write scientific reason:

Sodium is more metallic than aluminium.

Answer 1

• Metals give electrons. Sodium has electronic configuration (2, 8, 1). It has only one electron in the outermost shell.
• It can easily give a single electron in the outermost shell. Hence, Sodium is a strong metal.
• Aluminium has an electronic configuration (2,8,3). It has three electrons in the outermost shell.
• Donation of three electrons is more difficult than the donation of one electron. Hence, sodium is more metallic than aluminium.