How many orbits are contained in an atom with atomic number 13? by Sunday | Dec 10 | Chemistry WAEC | 0 comments A. 7 B. 6 C. 5 D. 3 Correct Answer: Option D D. 3 Users Also Read These:An isotope has an atomic number of 15 and a mass…The nucleon number and the proton number of a…The mass of an element is 27 and its atomic number…The number of electronic shells contained in an atom…The atomic number of an atom would be equal to its…