Which of the following options best compares and contrasts electromagnetic radiation? Each type of electromagnetic radiation has different frequencies but each have similar energy. O Each type of electromagnetic radiation has a different wavelengths but have similar frequencies. O Each type of electromagnetic radiation travels at the same speed but have different wavelengths. Each type of electromagnetic radiation travels at different speeds but have different wavelengths.

"among the transition metal elements, manganese and zinc have a slight lowering of electronegativities. the reason behind this is that the nuclear charges of these elements are slightly weaker than the other transition metal elements due to the way their valence electrons are filled up. both manganese and zinc have their valence electrons filled up to the 4th shell with 1 pair of electrons (4s2) completely occupying it. although the electrons in the 3rd shell (3d) are yet to be paired since the outer most shell is filled up, the ability of the nucleus to attract electrons is lessened. hence,   the electronegativity (or the ability to attract electrons) is lessened."

bcde is the incorrect answer it is a