Answer:
The correct answer is option 4.
The compound AB₂ is a covalent compound.
<h3>What is the nature of the molecular substance AB₂?</h3>
The nature of a substance depends on the component elements and the nature of the bonds present in the substance.
Substances can be ionic in nature if ionic bonds are present in the compound or covalent in nature if covalent bonds are present.
The substance AB₂ is composed of the elements A and B where A is a group 14 element and B is a group 16 element.
Group 14 elements are usually non-metals or semi-metals.
Group 16 elements are non-metals.
The bond between A and B will be covalent. Therefore, the compound AB₂ is a covalent compound.
Learn more about covalent compounds at: brainly.com/question/11651796
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The mole is simply an Avogadros number of anything( in this case Br atoms)
The Avogadro number is 6.022 x 10^23.
So no of moles = No of atoms / 6.022 x 10^23 = 2.03 x 10^24 / 6.022 x 10^23 = 3.37 Moles.