What is the electron configuration of an element with atomic number 15?

Explanation: An element with atomic number 15 means the element has 15 electrons and 15 protons. The given element is Phosphorous and the chemical symbol is P. According to Afbau's rule , the electrons are filed in order of increasing energies as given below:-

The nearest noble gas is Neon(Ne) with 10 electrons. Thus in noble gas configuration it can also be written as:

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.