Choose the correct alternate (s). (I) `BeCO_(3)` is kept in the stmosphere of `CO_(2)` since it is least thermally stable. (II) Be dissolved in an alkali forming `[Be(OH)_(4)]^(2-)` (III) `BeF_(2)` forms complex ion with `NaF` in which `Be` goes with cation. (IV) `BeF_(2)` forms complex ion with `NaF` in which `Be` goes with anion.A. `I, II, III`B. `II & III`C. `I, II, III & IV`D. `I, II & IV`

Choose the correct alternate (s). (I) `BeCO_(3)` is kept in the stmosp

1.	Choose the correct alternate (s). (I) `BeCO_(3)` is kept in the stmosphere of `CO_(2)` since it is least thermally stable. (II) Be dissolved in an alkali forming `[Be(OH)_(4)]^(2-)` (III) `BeF_(2)` forms complex ion with `NaF` in which `Be` goes with cation. (IV) `BeF_(2)` forms complex ion with `NaF` in which `Be` goes with anion.A. `I, II, III`B. `II & III`C. `I, II, III & IV`D. `I, II & IV`
Answer» Correct Answer - D `BeF_(2)+2NaF rarr Na_(2) [BeF_(4)]`

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