`Li^(+), Na^(+), K^(+)` एवं `Li_((aq))^(+), Na_((aq))^(+), K_((aq))^(+)` को बढ़ती आयनिक त्रिज्या में लिखिए और कारण बताइए।

(iii) H_(2)SO_(4(aq)) + NaOH_((aq)) to Na_(2)SO_(4(aq)) + H_(2)O_((I))

i) H_3PO_(4(aq)) iff H^ _(aq)+ H_2PO_(4(aq))^- ii) H_2PO_(4(aq))^- iff H^ +(aq)+ H_2PO_(4(aq))^(2-) . iii) H_2PO_(4(aq))^(2-) iff H^ +(aq)+ PO_(4(aq))^(3-) . The equilibrium constantsfor the above reactions at a certain temperature are K_1, K_2 and K_3 respectively. The equilibrium constant for the reaction. H_3PO_4(aq) iff 3H^ +(aq)+ PO_(4(aq))^(3-) in terms K_1, K_2 and K_3 is

Which among Na_(2)O_(2),Li_(2)O,K_(3)N and Li_(3)N is not known?

Which among Na_(2)O_(2),Li_(2)O,K_(3)N and Li_(3)N is not known?