Question

how can you identify metalloids on the basis of their electronic configuration?​

Answer 1

Answer:

The best way of determining if an unknown element is a Metalloid is by checking if any characteristics of metals and non-metals can be found, if both are then you most likely have a Metalloid element.

...

There are only seven classified elements:

Boron.

Silicon.

Germanium.

Arsenic.

Antimony.

Tellurium.

Polonium.

Answer 2

The elements with 4 electrons in their Valence Shell are metalloids.

such as : Silicon (Si) [ Elec config = 2,8,4 ]

Germanium (Ge)

Arsenic (As)