Aquantum of electromagnetic radiation has an energy of 2.0 kev. what is its frequency? planck's constant is 6.63 × 10−34 j · s. answer in units of hz.

A quantum of electromagnetic radiation is called photon, and the energy of a photon is given by
(1)
where h is the Planck constant and f is the frequency of the photon.

In this problem, the photon energy is

If we re-arrange equation (1), we can find the energy of the photon:

Hey hope you get the answer but i suck at math sorry : (

It won't lose or gain electrons if it's a covalent bond it shares the electrons with another atom or atoms. if it is an ionic bond it will lose the 3 electrons on the outer shell and become a positively charged ion.  credit goes to @sunshinebaby of answers.yahoo.com.