Which best describes the relationship between the terms “frequency,” “wavelength,” and “hertz”? wavelength is the number of frequencies, which is measured in hertz. frequency is the number of wavelengths, which is measured in hertz. wavelength is measured from frequency to hertz. frequency is measured from wavelength to hertz.

Frequency is the number of wavelengths, which is measured in hertz.

Explanation:

Frequency is defined as number of waves per seconds and it is measured in Hertz.

Wavelength is defined as distance between two successive crests or troughs.

Frequency and wavelength are inversely proportional to each other.

v = frequency  

= wavelength

"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."

am i too late?

explanation: