1. In chemical formulas, we represent constituent elements by their chemical symbols and indicate their valencies as subscripts or superscripts to denote the number of atoms or charges respectively.

    In chemical formulas, we represent constituent elements by their chemical symbols and indicate their valencies as subscripts or superscripts to denote the number of atoms or charges respectively.

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  2. We cross over valencies in chemical formulas to balance charges and create electrically neutral compounds. By swapping valencies between atoms, we ensure that the total positive and negative charges cancel out, forming a stable compound.

    We cross over valencies in chemical formulas to balance charges and create electrically neutral compounds. By swapping valencies between atoms, we ensure that the total positive and negative charges cancel out, forming a stable compound.

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  3. Binary compounds are chemical compounds composed of two different elements. They can be either ionic, consisting of a metal and a nonmetal, or covalent, composed of two nonmetals.

    Binary compounds are chemical compounds composed of two different elements. They can be either ionic, consisting of a metal and a nonmetal, or covalent, composed of two nonmetals.

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  4. The valency of an element is determined by its ability to gain, lose, or share electrons to achieve a stable electron configuration. For main-group elements, the valency often corresponds to the number of electrons an element gains or loses to achieve a noble gas configuration. Transition metals mayRead more

    The valency of an element is determined by its ability to gain, lose, or share electrons to achieve a stable electron configuration. For main-group elements, the valency often corresponds to the number of electrons an element gains or loses to achieve a noble gas configuration. Transition metals may have variable valencies based on their electron configurations and bonding patterns in compounds.

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  5. The valency of oxygen is typically -2, meaning it tends to gain two electrons to achieve a stable octet configuration. This valency influences compound formation by oxygen readily forming compounds with elements that can donate electrons, such as metals, resulting in stable ionic compounds like oxidRead more

    The valency of oxygen is typically -2, meaning it tends to gain two electrons to achieve a stable octet configuration. This valency influences compound formation by oxygen readily forming compounds with elements that can donate electrons, such as metals, resulting in stable ionic compounds like oxides.

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