Chemistry
Answer
(a) Duplet Rule — For an atom to achieve stable electronic configuration it must have 2 electrons in the first shell [outermost] like that of noble gas Helium.
(b) Octet Rule — For an atom to achieve stable electronic configuration it must have 8 electrons in outermost orbit like that of noble gases other than Helium.
Related Questions
Atomic number of calcium is 20 and of oxygen is 8. State the number of electrons - calcium loses and oxygen gains to attain stable electronic configuration of the nearest noble gas - during formation of electrovalent molecule, calcium oxide.
Define each of the following terms -
(a) electrovalent bond
(b) electrovalent compound
(c) covalent bond
(d) covalent compound
with suitable examples wherever required.
Sodium chloride is formed as a result of - transfer of electrons from metallic sodium atom to non-metallic chlorine atom. With the help of atomic orbit structure diagram - show the formation of sodium chloride [Atomic numbers: Na = 11, Cl = 17].
Explain in brief how atoms of other elements other than noble gases, attain stable electronic configuration of the nearest noble gas.