The number of electrons in the valence shell of elements A and B, are 6 and 7 respectively. What is the formula and type of bonding in a compound formed by these elements?A. A2B, covalentB. AB2, covalentC. A2B, ionicD. AB2, ionic
Question
The number of electrons in the valence shell of elements A and B, are 6 and 7 respectively. What is the formula and type of bonding in a compound formed by these elements?A. A2B, covalentB. AB2, covalentC. A2B, ionicD. AB2, ionic
Solution
The formula of the compound formed by these elements would be AB. This is because element A, with 6 electrons in its valence shell, needs 2 more electrons to achieve a stable electron configuration. Element B, with 7 electrons in its valence shell, needs 1 more electron to achieve a stable electron configuration. Therefore, element A can share its 2 electrons with 2 atoms of element B, and each atom of element B can share its 1 electron with 1 atom of element A. This results in a covalent bond, where electrons are shared between atoms. So, the correct answer is AB, covalent.
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