How would you describe (in general) the Lewis Dots Diagram for a Cation

The blackbody curve for a star name zeta is shown below. what is the peak wavelength for this star ?

Great amounts of electromagnetic energy from our sun and other bodies in space travel through space. which is a logical conclusion about these electromagnetic waves? their energy must be very their frequency must be very low these waves can travel without a medium they only travel through a vacuum of space

Which element would mostly likely have an electron affinity measuring closest to zero