Next, use the photon energies to determine the valence orbital energies for both li and na. forlithium, the transition is from the 2p-to the 2s-orbital, and the 2s-orbital energy is –520.3 kj/mol. use this to find the energy of the 2p-orbitalsin li. for sodium, the higher-energy photon is emitted when the electron drops from one of the 3p-orbitalsto the 3s-orbital, while the lower energy photon is emitted when the electron drops from one of the 3d-orbitalsto one of the 3p-orbitals. use these facts, along with the known energy of the 3s-orbital(–495.8kj/mol), to find the energies of the 3p-and 3d-orbitals.

D.na is the answer hope this

What are the options? physical property can be color, smell, opacity, viscosity, density, infra red spectrum, melting and boiling points, attraction and repulson to magnets, etc.

Following are the  advantages of the parametric equations: 1) they can be used to graph curves that are not functions, like the unit circle.2) the parameter can be used to represent the quantity that is  useful to  provide us with better information about the graph.3)  it is useful to convert between rectangular equations and parametric equations.with specific reference to chemistry,  parametric equations are employ for solving hydrogen and hydrogen-like ions, quantum mechanically. herein, cartesian coordinates are converted in spherical polar coordinates. the solution obtained, when plotted on spherical polar graph paper, provides visualization of atomic orbital such as s,p,d and f.