问答题试用电负性值估计下列键的极性顺序：
H—Cl、Be—Cl、Li—Cl、Al一Cl、Si—Cl、C—Cl、N Cl、O—Cl

【正确答案】键的极性由大到小顺序：Li—Cl、Al—Cl、Si—Cl、Be—Cl、H—Cl、C—Cl、N—Cl、O—Cl

【答案解析】