According to the Jefferson Lab website, strontium’s electron configuration is 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 5s2. This element’s noble gas configuration is [Kr] 5s2, with [Kr] denoting krypton’s electron configuration.
The atomic number of strontium is 38, which means it has 38 protons. An equal amount of protons and electrons cancel each other out in a neutral atom, resulting in a net charge of zero. As a result, each strontium neutral atom must have 38 electrons.
Around the nucleus, these electrons are grouped in energy levels. The electron configuration of this element makes it simple for pupils to figure out how the electrons in a strontium atom are grouped. There are two in the first energy level, eight in the second, 18 in the third, eight in the fourth, and two in the fifth.
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