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Find out the total number of diamagnetic...

Find out the total number of diamagnetic species is :
`K_(2)O_(2),[Ni(NH_(3))_(6)]^(2+),[MnBr_(4)]^(2-), NO_(2),[CuCl_(4)]^(3-),[Co("ox")_(3)]^(3-), BaO_(2),KO_(2),KCN`

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Find the total number of diamagnetic complexes. K_(3)[Fe(CN)_(6)],[Co(NH_(3))_(6)]Cl_(3), Na_(3)[Co(Ox)_(3)], [Ni(H_(2)O)_(6)]Cl_(2), K_(2)[Pt(CN)_(4)], [Zn(H_(2)O)_(6)](NO_(3))_(2), K_(2)[NiCl_(4)],[Pt(NH_(3))_(2)Cl_(2)], [Ni(CO)_(4)]

Find the total number of complexes / species which are paramagnetic. (a) [Co(NH_(3))_(6)]^(3+)," "(b) [Co(H_(2)O)_(6)]^(3+), (c ) [Cr(NH_(3))_(6)]^(2+)," "(d) [CoF_(6)]^(3-), (e ) K_(3)[PtCl_(3)(C_(2)H_(4))]," "(f) [Mn(NH_(3))_(6)]^(2+), (g) [Fe(NH_(3))_(6)]^(2+)," "(h) NO_(2), (i) ClO_(2)," "(j) [Pt(NH_(3))_(2)Cl_(2)

Amongst the following,the total number of species which are diamagnetic is ………………. . K_(4)[Fe(CN)_(6)],K_(3)[Cr(CN)_(6)],K_(3)[Co(CN)_(6)],K_(2)[Ni(CN)_(4)],[Co(NH_(3))_(6)]^(3+),K_(2)[TiF_(6)],[Pt(NH_(3))_(4)]^(2+)

How many of the following are diamagnetic? [Ag(NH_(3))_(2)]^(+),[Cd(NH_(3))_(4)]^(2+), Cr(CO)_(6),[Ni(NH_(3))_(6)]^(2+),[Ni(CN)_(4)]^(2-)

Find the total number of compounds which produce N_(2) gas on heating. NH_(4)NO_(3),NH_(4)NO_(2),CH_(3)CO ONH_(4),(NH_(4))_(2)CO_(3),NH_(4)IO_(3),(NH_(4))_(2)Cr_(2)O_(7),(NH_(4))_(3)PO_(4)

Among the following complexes , which has a magnetic moment of 5.9 BM Ni (CO)_(4) [Fe (H_(2)O)_(6)]^(2+),[Co(NH_(3))_(6)]^(3+),[mnBr_(4)]^(2-), [Zn(NH_(3))_(4)]^(2+)

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