What is the electron configuration of an element with atomic number 20? 1s2 2s2 2p6 3s2 3p5 1s2 2s2 2p6 3s2 3p6 1s2 2s2 2p6 3s2 1s2 2s2 2p6 3s2 3p6 4s2 1s2 2s2 2p6 nextreset

Explanation:

Electronic configuration represents the total number of electrons that a neutral element contains. We add all the superscripts to know the number of electrons in an atom.

The electrons are filled according to Afbau's rule in order of increasing energies.

The electronic configuration for element with atomic number 20 is Calcium and will have 20 electrons and is written as:

organisms are more likely to be more preserved in mud than sand because mud is moist and wet, while sand is very dry.

atomic number of carbon is 6

electronic configuration of carbon is 1s²2s²2p²

orbital diagram of c is as shown here in the image.