The distribution of electrons among the orbital shells and subshells is shown in the electron configuration of an atom.
What electron configuration exists in group 18 of period 3?
• According to the Periodic Table, P3- has the same electrical configuration as argon, the following Noble gas (Group 18) element, which is 2,8,8.
• The number of valence electrons in groups 1-2 and 13-18 rises by one from one element to the next across the periodic table's rows, or periods.
•There are several different arrangements for electrons. There should be two distinct trends or patterns: The number of valence shell electrons is constant for elements belonging to the same Group. Along a Periodic Table period, valence electrons are added in increasing numbers from left to right.
• Phosphorus (symbol P) has an atomic number of 15, according to a periodic table or table of elements.
Thus, there are 15 protons in each atom. Lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium are the chemical elements that make up alkali metals (Fr).
To learn more about electron configuration https://brainly.com/question/26084288
#SPJ4