14. y =n r(6-z r)e cos 0, is a proposed hydrogenic wavefunction, where z= atomic number, r = radial distance from the nucleus, 0 = azimuthal angle, n is a const

14. y =N r(6-Z r)e cos 0, is a proposed hydrogenic wavefunction, where Z= atomic number, r = radial distance from the nucleus, 0 = azimuthal angle, N is a constant. The CORRECT statement about (a) y = 0 in the xy-plane (6) two radial nodes are presenet in (c) one angular node is present in y (d) the size of the orbital decreases with increase in atomic number ( i can't understand option 1 how shi 0 at xy plane )