ˈɔːlsoʊ juːnˈiːk ɪz hˈaɪdɹədʒənz ɐbˈɪləɾi tə fˈɔːɹm hˈaɪdɹədʒən bˈɑːndz, wˌɪtʃ ɑːɹ ɐn ɪfˈɛkt ʌv tʃˈɑːɹdʒtɹˈænsfɜː, ɪlˌɛktɹoʊstˈæɾɪk, ænd ᵻlˈɛktɹɑːn kˈɔɹɪlətˌɪv kəntɹˈɪbjuːɾɪŋ fɪnˈɑːmɪnə.
Also unique is hydrogen's ability to form hydrogen bonds, which are an effect of charge-transfer, electrostatic, and electron correlative contributing phenomena.