Automocity of p4 = 4
automicity of H2So4 = h= 2*1=2
S= 1
O= 4
4+2+1=7

Atomicity of Molecules:

i) P4 (Phosphorus)
ii) H2SO4 (Sulfuric acid)

Explanation:

i) P4 (Phosphorus):
- Phosphorus exists as a tetrahedral molecule, with four phosphorus atoms bonded together in a ring.
- The molecular formula of phosphorus is P4, indicating that four phosphorus atoms are present in each molecule.
- Hence, the atomicity of P4 is 4, which means that four atoms of phosphorus are chemically bonded together to form a single molecule.

ii) H2SO4 (Sulfuric acid):
- Sulfuric acid is a strong acid that is commonly used in various industrial and laboratory processes.
- The molecular formula of sulfuric acid is H2SO4, indicating that two hydrogen atoms, one sulfur atom, and four oxygen atoms are present in each molecule.
- In the structure of sulfuric acid, the sulfur atom is bonded to two oxygen atoms through double bonds and to two other oxygen atoms through single bonds.
- The hydrogen atoms are bonded to the oxygen atoms.
- Hence, the atomicity of H2SO4 is 7, which means that seven atoms (2 hydrogen + 1 sulfur + 4 oxygen) are chemically bonded together to form a single molecule of sulfuric acid.

In summary, the atomicity of molecules refers to the number of atoms that are chemically bonded together to form a single molecule. In the case of P4, four phosphorus atoms are bonded together, so the atomicity is 4. In the case of H2SO4, two hydrogen atoms, one sulfur atom, and four oxygen atoms are bonded together, resulting in an atomicity of 7.