関連ワード:
how many lone pairs does hcn have how many lone pairs does hydrogen cyanide have how many lone pairs does co2 have how many bonding pairs does hcn have how many lone pairs does co2 have on its central atom how many bonding pairs does co2 have how many unshared pairs does co2 have how many lone electron pairs does co2 have how many bonding pairs and lone pairs does co2 have how many lone pairs of electrons does the hydrogen cyanide hcn molecule have
