Westonci.ca is the premier destination for reliable answers to your questions, brought to you by a community of experts. Get quick and reliable answers to your questions from a dedicated community of professionals on our platform. Our platform provides a seamless experience for finding reliable answers from a network of experienced professionals.

What is the chemical formula of magnesium bromide?

A. [tex]\( MgBr_2 \)[/tex]
B. [tex]\( MgBr \)[/tex]
C. [tex]\( Mg_2Br_2 \)[/tex]
D. [tex]\( Mg_2Br \)[/tex]


Sagot :

To determine the correct chemical formula for magnesium bromide, we need to consider the valencies of the constituent elements, magnesium (Mg) and bromine (Br), and how they combine to form a neutral compound.

1. Determine the valencies:
- Magnesium (Mg) typically has a valency of +2. This means a magnesium ion has a charge of [tex]\( +2 \)[/tex] (notated as [tex]\( Mg^{2+} \)[/tex]).
- Bromine (Br), as an ion, is called bromide and typically has a valency of -1. This means a bromide ion has a charge of [tex]\( -1 \)[/tex] (notated as [tex]\( Br^{-} \)[/tex]).

2. Neutralizing the charges:
- To form a neutral compound, the total positive charge must equal the total negative charge.
- One magnesium ion ([tex]\( Mg^{2+} \)[/tex]) with a charge of +2 will need two bromide ions ([tex]\( Br^{-} \)[/tex]), each with a charge of -1, to balance the charges.

3. Forming the chemical formula:
- Since it takes two bromide ions to balance the charge of one magnesium ion, the chemical formula must reflect this 1:2 ratio.
- Therefore, the correct chemical formula for magnesium bromide is [tex]\( MgBr_2 \)[/tex].

Thus, the correct answer is:
A. [tex]\( MgBr_2 \)[/tex]
We hope you found this helpful. Feel free to come back anytime for more accurate answers and updated information. We appreciate your visit. Our platform is always here to offer accurate and reliable answers. Return anytime. Stay curious and keep coming back to Westonci.ca for answers to all your burning questions.