Question

The diffused impurities with ________ valence electrons are called donor atoms

Answer 1

Answer:

The diffused impurities with __5__ valence electrons are called donor atoms.

Donor atoms are distributed impurities with five valence electrons. A donor is an element from the periodic table's column V, such as phosphorus, arsenic, or antimony, that is substituted for a normal atom in germanium or silicon crystal and possesses one or more valence electrons that can be removed and added to the crystal's conduction band.

Answer 2

The diffused impurities with five valence electrons are called donor atoms.

• Impure atoms present in a semi-conductor substance that gives out 5 electrons to the other substance are called donor atoms.
• A donor should at least contain one or more valence electrons in its outermost shell than the semi-conductor from which they accept.
• Take any atom from column V of the periodic table, for example: phosphorous (Atomic number = 15, containing 5 valence electrons in its outermost shell) can become a donor for many semiconductors such as germanium, silicon, etc. (Both of which contain 4 valence electron.)