Chemistry
Explain:
(a) octet rule for formation of a chemical compound.
(b) duplet rule for formation of hydrogen.
Answer
(a) For an atom to achieve stable electronic configuration it must have 8 electrons in outermost orbit like that of noble gases other than Helium. This is known as Octet rule.
(b) For an atom of hydrogen to achieve stable electronic configuration it must have 2 electrons in the first shell [outermost] like that of noble gas Helium. So, two hydrogen atoms share one electron each to become stable. This is known as Duplet rule.
Related Questions
Give the use of the following isotopes:
(a) Radioactive isotopes
(b) 235U
(c) 60Co
(d) 131I
(e) 14C
How does the Modern atomic theory contradict and correlate with Dalton's atomic theory?
An element
A has atomic number 7, mass number 14
B has electronic configuration 2, 8, 8
C has 13 electrons, 14 neutrons
D has 18 protons 22 neutrons
E has electronic configuration 2, 8, 8, 1
State
(i) valency of each element
(ii) which one is a metal
(iii) which is a non-metal
(iv) which is an inert gas.
Elements X, Y and Z have atomic numbers 6, 9 and 12 respectively. Which one :
(a) forms an anion
(b) forms a cation
(c) has four electrons in its valence shell?