[" Substance having more "],[" number of moles in "]

Substance having more number of moles is

Assertion : Equal moles of different substances contain same number of constituent particles Reason : Equal weights of different substances contain the same number of constituent particles

Name the atoms of a substance having same atomic number, but different mass numbers. Give one example of such a substance. How do the structures of such atoms differ ?

The VA group element having more number of allotropes is

Assertion : Both 32 g of SO_(2) and 8g of CH_(4) have same number of molecules Reason : Equal moles of substances have equal number of molecules.

"One mole of all substances contain the same number of specified particles." What is the relation between number of moles and volume?

"One mole of all substances contain the same number of specified particles." How to connect mole, gram mole and gram atom?