ok, not all elements have atoms with net spin...
basically follow these rules and u can work out net spin for any atom of any element:
if both mass number and atomic number are even, net spin = 0 i.e. NO net spin
if the mass number is odd, regardless of atomic number, net spin = multiple of 1/2
if the mass number is even, and the atomic number odd, net spin = whole number
A even, Z even - 0
A odd - 1/2
A even, Z odd - whole