Characteristics of Mg, Al, S, according to plan: 1) 1. Chemical sign 2. Sequential number

Characteristics of Mg, Al, S, according to plan: 1) 1. Chemical sign 2. Sequential number 3. Period (small / large) 4. Group (main / secondary) 5. Relative atomic mass 6. Metal or non-metal 2) 1 Atomic charge 2. Distribution of electrons by shells 3. Number of protons, electrons and neutrons 4. External level completed or incomplete 5. Electronic formula 6. Maximum on it can be z electron

Magnesium.

1) Mg, 12 serial number, 3rd minor period, 2nd main group, relative atomic mass 24.305, metal.

2). Atomic charge 12, distribution of electrons by shells + 12Mg) 2) 8) 2, number of protons 12, number of electrons 12, number of neutrons 12, outer level not completed, electronic formula 1s22s22p63s2, maximum number of electrons: 2 * 3 ^ 2 = 18.

Aluminum.

1) Al, 13 serial number, 3rd minor period, 3rd main group, relative atomic mass 26.9815, metal.

2). Atomic charge 13, distribution of electrons by shells + 13Al) 2) 8) 3, number of protons 13, number of electrons 13, number of neutrons 14, outer level is incomplete, electronic formula 1s22s22p63s23p1., Maximum number of electrons: 2 * 3 ^ 2 = 18 …

Sulfur.

1) S, 16 serial number, 3rd minor period, 4th main group, relative atomic mass 32.065, non-metal.

2). Atomic charge 16, distribution of electrons by shells + 16S) 2) 8) 6, number of protons 16, number of electrons 16, number of neutrons 16, outer level is incomplete, electronic formula 1s22s22p63s23p4., Maximum number of electrons: 2 * 3 ^ 2 = 18 …