Explain how Nitrogen and Hydrogen form a covalent bond. What would be the formula?

According to periodic trend, which of the following most likely has the highest ionization energy? kr be ni sc

Draw metallic bonding if two copper

Look at the spectrums of a star moving towards earth and a motionless star. which of these is a correct inference that can be draw from the observation of the two spectrums? (2 points) the spectrum of a motionless star is difficult to be viewed separately using oridinary telescopes. the spectrum of a motionless star is identical to the spectrum of a star which moves towards earth. the spectrum of a star shifts towards the red region when the star moves towards earth. the spectrum of a star shifts towards the blue region when the star moves towards earth.