1. What is the difference between Con and 2Co22. How many moles of sod

1.	1. What is the difference between Con and 2Co22. How many moles of sodium atoms corresponds to 1.56×10^21 atoms of sodium.3. Where are electrons found in the atom4. Give an example of monovalent element5.which of the two would be chemically more reactive element,X of atomic no. 18 or element Z of atomic no. 16 and why?
Answer» ANSWER: I have a CONFUSION in it

1. What is the difference between Con and 2Co22. How many moles of sodium atoms corresponds to 1.56×10^21 atoms of sodium.3. Where are electrons found in the atom4. Give an example of monovalent element5.which of the two would be chemically more reactive element,X of atomic no. 18 or element Z of atomic no. 16 and why?

Answer»

I have a CONFUSION in it