Electronic configuration is a representation of how electrons are distributed among the energy levels and orbitals of an atom.An element A has two electrons in the outermost shell of its atom and combines with an element B having seven electrons in the outermost shell, forming the compound AB2. The compound when dissolved in water conducts electric current. Q 2.1 Identify the type of chemical bond present in the compound AB2.
Question
Electronic configuration is a representation of how electrons are distributed among the energy levels and orbitals of an atom.An element A has two electrons in the outermost shell of its atom and combines with an element B having seven electrons in the outermost shell, forming the compound AB2. The compound when dissolved in water conducts electric current. Q 2.1 Identify the type of chemical bond present in the compound AB2.
Solution
The type of chemical bond present in the compound AB2 is an ionic bond.
Here's why:
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Element A has two electrons in its outermost shell. It wants to lose these two electrons to achieve a stable electron configuration.
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Element B has seven electrons in its outermost shell. It wants to gain one electron to achieve a stable electron configuration.
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Element A can give its two electrons to two atoms of Element B. This forms two ionic bonds, one between A and each B atom.
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The resulting compound AB2 is made up of ions (A2+ and two B- ions). When this compound is dissolved in water, the ions separate and are free to move, which allows the solution to conduct electricity. This is a characteristic of ionic compounds.
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