Which object reflects light with the longest wavelength? a yellow book a violet flower a blue paper a green leaf

Answer : The object reflects light with the longest wavelength is, A yellow book.

Explanation :

When a white light is passing through a prism then the white light separated into different colors with different wavelength.

The different visible colors from shortest to longest wavelength are, violet, blue, green, yellow, orange, red.

That means violet has shortest wavelength and red has longest wavelength.

As per given in the question, a yellow book object reflects light with the longest wavelength.

Hence, the correct option is, A yellow book.

"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."