1.

What is the correct relation ship between the pH values of isomolar solution of Na_(2)(O(pH_(1)), Na_(2)S(pH_(2)), Na_(2)Se(pH_(3)) and Na_(2)Te(pH_(4)) ?

Answer»

`pH_(1) lt pH_(2) lt pH_(3)lt pH_(4)`
`pH_(1) gt pH_(2) gt pH_(3) gt pH_(4)`
`pH_(1) lt pH_(2) lt pH_(3)=pH_(4)`
`pH_(1) gt pH_(2)=pH_(3) gt pH_(4)`

Solution :`Na_(2)O=` BASIC. Basic nature gradually DECREASES.


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