What are photons? Explain how it relates to the unique set of spectral lines formed for each element?

Hi..

In modern physics, a photon is a particle after the stem that seeks to generate electromagnetic waves. This mention transmits electromagnetic radiation at all wavelengths. In fact, this particle produces gamma radiation, X-rays, visible light and ultraviolet waves. Photons are an important factor in their electromagnetic interaction between electric and magnetic fields and static charges.

Photons are fundamentally different from quarks such as quarks. The resident mass of this particle was zero, so the velocity of this particle in a vacuum is exactly equal to the speed of light. Perhaps the most important effect that a photon has on a normal person's life is in seeing their surroundings. In fact, without photons, we would not be able to create the environmental conditions to see.

the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.

the answer is c. nacl