How did the uncertainty principle influence thinking about the arrangement of electrons in atoms?

   

scientists realized that electrons have different energies depending on their location within an atom.

 

   

scientists realized that electrons could not be located in defined orbits.

 

   

scientists realized that electrons could move from one energy level to another.

 

   

scientists realized that electrons did not continually lose energy.

 

Scientists realized that electrons could not be located in defined orbits.

Explanation:

According the Heisenberg's uncertainty principle, the momentum and position of a particle cannot be simultaneously measured with precision. This implies that the position of a particle (including the electron) cannot be accurately determined with precision. This became a failure of the Bohr's model which postulated that electrons are located in definite orbits. By combining the wave particle duality of Louis De Broglie and the the idea of Max Plank, Erwin Schrödinger arrived at the wave mechanical model of the atom in 1927.

c is having 4 valence electrons and is bonded to three hydrogens and one sulphur atom, therefore, the number of bond pair is equal to four. as all the valence electrons are used in forming the bonds so, there is no lone pair left on carbon.

s is having 6 valence electrons and is bonded to one other sulfur atom and one carbon atom, therefore, the number of bond pair is equal to 2. as only two valence electrons are used in forming the bonds so, four electrons are left. therefore, two lone pairs are present on s.