Question

Элементы,которые расположены в третьем периоде, имеют

Answer 1

Имеют 3 енергетических уровня

Answer 2

Elements in the Third Period

The elements that are located in the third period of the periodic table include sodium (Na), magnesium (Mg), aluminum (Al), silicon (Si), phosphorus (P), sulfur (S), chlorine (Cl), and argon (Ar).

Here is a list of the elements in the third period: 1. Sodium (Na) 2. Magnesium (Mg) 3. Aluminum (Al) 4. Silicon (Si) 5. Phosphorus (P) 6. Sulfur (S) 7. Chlorine (Cl) 8. Argon (Ar).

These elements have different properties and are classified as metals, nonmetals, and noble gases. Sodium and magnesium are metals, while aluminum is a metalloid. Silicon, phosphorus, sulfur, and chlorine are nonmetals, and argon is a noble gas.

It's important to note that the elements in the third period have increasing atomic numbers, which means that each element has one more proton in its nucleus than the previous element.

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