X-ray waves are than light waves so they have longer wavelengths.

more energetic

Explanation:

X-ray waves are more energetic than light waves .

 A wave can be characterized based on its energy, wavelength and frequency.

 The energy of a wave is function of both wavelength and frequency

 Wavelength is the distance between two crests or troughs of wave

 Frequency is the number of waves passing through a point per unit of time.

X-rays have low wavelength and high frequency compared to light waves.

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.