What are the four quantum numbers for 7s^1

n = 7
l = 0 (for s orbitals l is always 0)
ml = 0 ( when l = 0 then ml must = 0)
s = +1/2 (by convention the first electron is always assigned a value of +1/2 for the spin quantum number.)

Hope this is helpful to you. JIL HIR