• question_answer 82)   Assertion (A): Beryllium carbonate is kept in the atmosphere of$C{{O}_{2}}$. Reason (R): Beryllium carbonate is unstable and decomposes to give beryllium oxide and carbon dioxide. (a) Both A and R are correct and R is the correct explanation of A. (b) Both A and R are correct and R is not the correct explanation of A. (c) Both A and R are not correct. (d) A is not correct but R is correct.

(a) $BeC{{O}_{3}}$is kept in the atmosphere of$C{{O}_{2}}$ otherwise it will decompose to give its oxide and carbon dioxide.