Do all metal produce electromagnetic radiation when they are heated in a flame

Yes , all metals when placed in the heat produces EM radiations

Explanation:

Due to heat , the electrons mobilized and collapsed and electronic transition happened . the electrons shift from low level to high level and so on in the opposite . The electromagnetic radiation are emitted

explanation:

crosscutting concepts have application across all domains of science. as such, they are a way of linking the different domains of science. they include patterns; cause and effect; scale, proportion, and quantity; systems and system models; energy and matter; structure and function; and stability and change.

atomic number of carbon is 6

electronic configuration of carbon is 1s²2s²2p²

orbital diagram of c is as shown here in the image.