1. Tardigrade
  2. Question
  3. Chemistry
  4. A metal 'M' burns with dazzling brilliance in air above 1000° C to give a white powder. The white powder reacts with water to form a white precipitate 'P' and a colourless gas 'G' with a characteristic smell. The metal 'M' dissolve in conc. NaOH to liberate another gas 'H'. 'H' may also be obtained on heating 'G'. Then

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Q. A metal $'M'$ burns with dazzling brilliance in air above $ 1000^\circ C$ to give a white powder. The white powder reacts with water to form a white precipitate $'P'$ and a colourless gas $'G'$ with a characteristic smell. The metal $'M'$ dissolve in conc. $ NaOH $ to liberate another gas $'H'. 'H' $ may also be obtained on heating $'G'.$ Then

The s-Block Elements

Solution:

$Be + Air \xrightarrow{T > 1000^{\circ} } BeO + Be_3N_2 $ (white power)
$Be_3N_2 + 6H_2O \rightarrow \underset {\text{(White precipitate)}}{3Be(OH)_2} + \underset{\text{(Colourless gas)}}{2NH_3}$