What do you want us to work out?
Answer: The force which exists between particle of same kind of substance called cohesion force. A . B . The force of cohesion is defined as the force of attraction between molecules of the same substance.
Explanation:
Period are going left to right across the periodic table
Groups are going up to down on the periodic table
2HNO3 + Ca(OH)2 --> 2HOH + Ca(NO3)2
