Write the structure of atoms Si, Al, P

a) Si atomic number-14; the number of protons +14; 3 electronic levels: on the first – 2 protons, on the second – 8 protons, on the third – 4 protons; electronic formula – 1s2 2s2 2p6 3s2 3p2
b) Al atomic number – 13; the number of protons +13; 3 electronic levels: at the first level – 2 protons, at the second level – 8 protons, at the third level – 3 protons; electronic formula – 1s2 2s2 2p6 3s2 3p1
c) P atomic number – 15, the number of protons +15, 3 electronic levels: on the first – 2 protons, on the second – 8 protons, on the third – 5 protons; electronic formula – 1s2 2s2 2p6 3s2 3p3



One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.