Lithium fluoride is used as a flux in the production of ceramics and glazes. Given their location on the periodic table, identify the ionic charge for each element and predict the chemical formula of the compound formed.

Question

Responses
A Lithium, Li, is an alkali metal and is in Group IA with an ionic charge of +1. While fluorine, F, is a halogen and is in Group VIIA with a charge of -1. These will form LiF(s).
Lithium, Li, is an alkali metal and is in Group IA with an ionic charge of +1. While fluorine, F, is a halogen and is in Group VIIA with a charge of -1. These will form LiF (s) .
B Lithium, Li, is an alkaline earth metal and is in Group IA with an ionic charge of +2. While fluorine, F, is a halogen and is in Group VIIA with a charge of -1. These will form LiF2(s).Lithium, Li, is an alkaline earth metal and is in Group IA with an ionic charge of +2. While fluorine, F, is a halogen and is in Group VIIA with a charge of -1. These will form LiF 2(s) .
C Lithium, Li, is an alkaline earth metal and is in Group IA with an ionic charge of +2. While fluorine, F, is a noble gas and is in Group VIA with a charge of -2. These will form Li2F2(s).Lithium, Li, is an alkaline earth metal and is in Group IA with an ionic charge of +2. While fluorine, F, is a noble gas and is in Group VIA with a charge of -2. These will form Li 2 F 2(s) .
D Lithium, Li, is an alkaline earth metal and is in Group IA with an ionic charge of +1. While fluorine, F, is a diatomic gas and is in Group VIA with a charge of -2. These will form Li2F(s).Lithium, Li, is an alkaline earth metal and is in Group IA with an ionic charge of +1. While fluorine, F, is a diatomic gas and is in Group VIA with a charge of -2. These will form Li 2 F (s) .

Answer 1

The correct response regarding the ionic charges of lithium and fluorine, and the chemical formula for the compound they form, is:

A: Lithium, Li, is an alkali metal and is in Group IA with an ionic charge of +1. While fluorine, F, is a halogen and is in Group VIIA with a charge of -1. These will form LiF(s).

Explanation:

• Lithium (Li) is an alkali metal in Group 1 (Group IA) of the periodic table, and it forms a cation with a charge of +1.
• Fluorine (F) is a halogen in Group 17 (Group VIIA), and it forms an anion with a charge of -1.
• When forming an ionic compound, one lithium ion (Li⁺) will pair with one fluoride ion (F⁻) to create the neutral compound lithium fluoride, represented by the formula LiF.

The other options incorrectly describe the ionic charges and groups for lithium and fluorine, resulting in incorrect chemical formulas.