AIIMS 2019 Chemistry Properties of Elements MCQ Question
Be has small size, high ionisation enthalpy and high polarising power. Therefore, it predominantly forms covalent compounds.
Correct Answer
Detailed Explanation
Beryllium (Be) has a small atomic size, high ionization enthalpy, and significant polarizing power, which leads it to form covalent compounds rather than ionic ones. Its ability to polarize anions results in the formation of compounds like BeCl₂ and BeH₂, where covalent character is predominant. Other options are not relevant as they do not provide any alternative explanations or examples related to Beryllium's bonding behavior. Understanding these properties helps clarify why certain elements favor covalent bonding over ionic bonding.
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