Chemistry · Kossel-Lewis approach to chemical bond formation, the concept of ionic and covalent bonds
The electronic configuration of two elements and are given below: The formula of
The electronic configuration of two elements \( X \) and \( Y \) are given below: \( \boldsymbol{X}=\mathbf{2}, \mathbf{8}, \mathbf{2} \) \( \boldsymbol{Y}=\mathbf{2}, \mathbf{8}, \mathbf{7} \) The formula of a compound that can be formed between these two elements is:
- A. \( X Y \)
- B. \( X Y_{2} \)
- C. \( X_{2} Y \)
- D. \( X Y_{3} \)
Step-by-step solution
Element X (2,8,2) is magnesium, which loses 2 electrons to form Mg²⁺. Element Y (2,8,7) is chlorine, which gains 1 electron to form Cl⁻. To balance charges, two Y⁻ ions are needed for one X²⁺ ion, giving the formula XY₂.
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