Chemistry, 30.01.2020 06:53 nadia74

Add electron dots and charges as necessary to show the reaction of potassium and bromine to form an ionic compound. true or false

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The given statement is true that states electron dots and charges can be added to show the reaction of potassium and bromine to form an ionic compound.

Further explanation:

Chemical bond:

The attraction between atoms, molecules or ions that is responsible for the formation of chemical compounds is known as a chemical bond. It is formed either due to electrostatic forces or by the sharing of electrons. There are many strong bonds such as ionic bonds, covalent bonds, and metallic bonds while some weak bonds like dipole-dipole interactions, London dispersion forces, and hydrogen bonding also exist.

Ionic compound:

As the name suggests, these compounds have ions as their constituent particles. Out of two bonded atoms, one forms cation by the loss of electrons while other become anion by the gain of electrons.

The bonding between the different atoms in covalent molecules is shown by some diagrams known as the Lewis structures. These also show the presence of lone pairs in the molecule. These are also known as Lewis dot diagrams, electron dot diagrams, Lewis dot structures or Lewis dot formula. In covalent compounds, the geometry, polarity, and reactivity are predicted by these structures.

The octet rule is the rule in accordance with which the elements have the tendency to bond with other elements and acquire eight electrons in their valence shells. This results in achieving a stable noble gas configuration.

The atomic number of K is 19 and its electronic configuration is $\left[{{\text{Ar}}}\right]{\text{4}}{s^1}$ . This indicates it has one valence electron in it. The atomic number of Br is 35 and its electronic configuration is $\left[{{\text{Ar}}}\right]{\text{4}}{s^2}{\text{4}}{p^5}$ . This indicates it has 7 valence electrons in it. In order to fulfill their respective octets, potassium loses its one electron and this is gained by bromine. As a result, K gets converted to ${{\text{K}}^ + }$ and Br becomes ${\text{B}}{{\text{r}}^ - }$ .

The formation of cation occurs as follows:

${\text{K}} \to{{\text{K}}^ + } + {e^ - }$

The formation of anion occurs as follows:

${\text{Br}} + {{\text{e}}^ - }\to{\text{B}}{{\text{r}}^ - }$

The overall chemical reaction for the formation of the ionic compound is as follows:

${{\text{K}}^ + } + {\text{B}}{{\text{r}}^ - }\to{\text{KBr}}$

For electron dot structures, refer to the attached image.

Learn more:

1. Identification of ionic bonding:

2. What type of bond exists between phosphorus and chlorine?

Answer details:

Grade: High School

Subject: Chemistry

Chapter: Ionic and covalent compounds

Keywords: ionic compounds, electron dot structures, electron dot, Br, Br-, KBr, K+, K, 7 valence electrons, 1 valence electron, 19, 35, cation, anion.