Yes, it is. On the receiving end (the number you call) a fax machine is set up as the recipient of your call. The phone line can still be used as a voice call, just not both at the same time. See the...
The atomic number tells you the number of protons in an atom. The atomic number is right above the element symbol.
Example:
36
Kr.
83.80 In this example, 36 is the atomic number, so the number of...