Which among the following are the electronic configuration of noble gases?
A recently discovered isotope of the noble element oganesson (symbol ‘Og’) has electronic configuration 2, 8, 18, 32, 32, 18, 8 and mass number 294.Calculate the number of electrons, protons and neutrons in its atom.
An element X has an electronic configuration of 2, 8, 18, 8, 1. In this case, X will be ___ .
The electronic configurations of three elements 'A', 'B', and 'C' are 2, 8, 3; 2, 8, 18, 4; 2, 8, 4, respectively. The order of the non-metallic character is
Why are the electronic configuration numbers the way they are? 2,8,18,32,… How were they determined?