SC10-WEEK28-IONIC COMPOUNDS AND METALS

IONIC COMPOUNDS AND METALS

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What are ionic compounds?

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Properties of ionic compounds

Ionic compounds

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Why can't an atom lose or gain a proton?

Charges of some Common Monatomic ions

Example of an ionic compound

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Example of compounds containing a metal ion with variable charge

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Some facts about ionic compounds:

Ionic compounds in a liquid state conduct electricity due to the movement of electrons from one point to another. In the solid state, ionic compounds are tightly packaged, which makes the movement of ions impossible, so ionic compounds do not conduct electricity in the solid state.

Electron affinity

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Welcome 6th graders!

10TH-IONIC COMPOUNDS AND METALS-EN © 2024 by CASURID is licensed under CC BY-NC-ND 4.0

SC.912.P.8.5 Relate properties of atoms and their position in the periodic table to the arrangement of their electrons.

Ionic compounds can be defined as the chemical compound made up of oppositely charged ions held together by ionic bonds or electrostatic forces.

In sodium chloride (NaCl), sodium (Na) loses an electron and becomes positively charged in its ionic state, and chlorine (Cl) gains an electron and becomes negatively charged in its ionic state. Sodium (Na+) and chlorine (Cl-) are attracted to each other.

Protons are located in the central nucleus of the atom, i.e. the nucleus. Imagine it (the core) as a small rock submerged in a vast and powerful ocean (atom). They are strongly bound to the atom by the strong nuclear force. Of course, it is the strongest of all the forces of nature.

This is because protons have to overcome mutual repulsion due to similar charges. Therefore, it takes a strong force to unite. protons together. In fact, the strong nuclear force serves this purpose.

For example, consider binary ionic compounds of iron and chlorine. Iron typically exhibits a charge of either 2+ or 3+, and the two corresponding compound formulas are FeCl2 and FeCl3.

The simplest name, “iron chloride,” will, in this case, be ambiguous, as it does not distinguish between these two compounds.

In cases like this, the charge of the metal ion is included as a Roman numeral in parentheses immediately following the metal name. These two compounds are then unambiguously named iron(II) chloride and iron(III) chloride, respectively.