An argument against this placement is that formation of hydride from hydrogen is endothermic, unlike the exothermic formation of halides from halogens.
ɐn ˈɑːɹɡjuːmənt ɐɡˈɛnst ðɪs plˈeɪsmənt ɪz ðæt fɔːɹmˈeɪʃən ʌv hˈaɪdɹaɪd fɹʌm hˈaɪdɹədʒən ɪz ˌɛndoʊθˈɜːmɪk, ʌnlˈaɪk ðɪ ɛɡzəðˈɜːmɪk fɔːɹmˈeɪʃən ʌv hˈælaɪdz fɹʌm hˈælədʒənz.