Define valency by taking examples of silicon and oxygen.
Answers
Answer:
Valency is defined as the combining capacity of the element. It is determined by the number of valence shell electrons present in the atom.
(1)Silicon has atomic number 14. The electronic configuration of silicon is 2, 8, 4. The number of valence electrons is 4. So the valency is 4.
(2)Oxygen has an atomic number 8. The electronic configuration is 2, 6. The valency is (8-6)=2.
Answer:
The valency may be defined as the combining capacity of the atoms of elements, or their tendency to form molecules with atoms of the same or different elements.
In case of Silicon, it has 4 electrons in the outer most shell, thus it is deficient by 4 electrons to have a fully filled outer most shell. Hence Its valency is 4.
In case of Oxygen, it has 6 electrons in the outer most shell, thus it is deficient by 2 electrons to have a fully filled outer most shell. Hence Its valency is 2.
Explanation: