Question

Что обозначают следующие записи: 5Cl, 2Na+, Br2, 4N2, 2F, P4, 4O2, 10H2O, 3S2−, H2, 5CO2, 3Mg2+, 2I2

Answer 1

5Cl----- 5 атомов хлора;
2Na+ ---- 2 иона натрия;
Br2 ----- 1 молекула брома;
4 N2-----4 молекулы азота;
2F-------2 атома фтора;
P4------1 молекула фосфора;
4O2----- 4 молекулы кислорода;
10 H2O------- 10 молекул воды;
3S2-3 иона серы;
H2------- 1 молекула водорода;
5CO2-------- 5 молекул углекислого газа;
3Mg2+------ 3 иона магния;
2I2------- 2 молекулы йода.

Answer 2

Chemical Notations Explained:

5Cl - This notation represents 5 atoms of chlorine.

2Na+ - This notation represents 2 sodium ions, each with a +1 charge.

Br2 - This notation represents a molecule of bromine, consisting of two bromine atoms bonded together.

4N2 - This notation represents 4 molecules of nitrogen gas, each consisting of two nitrogen atoms bonded together.

2F - This notation represents 2 atoms of fluorine.

P4 - This notation represents a molecule of phosphorus, consisting of four phosphorus atoms bonded together.

4O2 - This notation represents 4 molecules of oxygen gas, each consisting of two oxygen atoms bonded together.

10H2O - This notation represents 10 molecules of water.

3S2− - This notation represents 3 sulfide ions, each with a -2 charge.

H2 - This notation represents a molecule of hydrogen gas, consisting of two hydrogen atoms bonded together.

5CO2 - This notation represents 5 molecules of carbon dioxide, each consisting of one carbon atom bonded to two oxygen atoms.

3Mg2+ - This notation represents 3 magnesium ions, each with a +2 charge.

2I2 - This notation represents 2 molecules of iodine, each consisting of two iodine atoms bonded together.

These notations are used in chemistry to represent the composition and structure of chemical substances, including elements, ions, and molecules.