Question

What is the electronic configuration of an atom that has a proton number of 5 and a mass number of 11?

Answer 1

• The electronic configuration represents the number of electrons present in different shells around the nucleus in an atom.
• Atomic number is equal to the number of electrons or protons present in an atom of the element and the mass number is the sum of protons and neutrons present in the atom of the element.
• The first shell can accommodate a maximum of 2 electrons and the valence shell can accommodate a maximum of 8 electrons in it.

Here, number of protons = number of electrons =5

Therefore, the electronic configuration of the given element is 2,3.