Question

Составьте формулу соединения, образованного ионами кальция и фосфора.Поясните, каким правилом вы руководствовались при составлении формулы

Answer 1

3Ca+2P=Ca3P2
не особо поняла задание, но помоему здесь простоя реакция соединения

Answer 2

Chemical Formula of Calcium Phosphate

The chemical formula of the compound formed by the ions of calcium and phosphorus is Ca3(PO4)2.

Rules for Writing Chemical Formulas

When writing the chemical formula for a compound, certain rules are followed:

1. The compound must be electrically neutral, meaning the total positive charge of the cations must equal the total negative charge of the anions. 2. The subscripts in the formula represent the ratio of ions in the compound. 3. The cation (positively charged ion) is written first, followed by the anion (negatively charged ion).

In the case of calcium phosphate, calcium (Ca) is a divalent cation with a charge of +2, and phosphate (PO4) is a polyatomic anion with a charge of -3. To achieve electrical neutrality, three calcium ions (3 x +2 = +6) combine with two phosphate ions (2 x -3 = -6). Therefore, the formula is Ca3(PO4)2.