Lewis Symbols
Practice Questions
We discussed in
chemical bonding and Lewis symbols
that Lewis dot symbols are used to represent valence electrons. Now, it's time you answered some questions on Lewis symbols.
Write Lewis symbol of Mg.
Name Atomic number Electrons per Shell Valence Electrons Lewis Symbol
Magnesium (Mg) 12 2,8,2 2 : Mg
Answer
Write Lewis symbol of Na.
Name Atomic number Electrons per Shell Valence Electrons Lewis Symbol
Sodium (Na) 11 2,8,1 1
Answer
Write Lewis symbol of Br.
Name Atomic number Electrons per Shell Valence Electrons Lewis Symbol
Bromine (Br) 35 2,8,18,7 7
Answer
Write Lewis symbols of S and S2− .
The atomic number of sulphur is 16.
Name Valence Electrons Lewis Symbol
S 6
S2− 8
Answer
Write Lewis symbols of Al and Al3+ .
The atomic number of Aluminium (Al) is 13.
Name Electrons per shell Valence Electrons Lewis Symbol
Al 2,8,3 3
Al3+ 2,8,0 0
Answer