Question

78. The metal which can form an oxide having
metal: oxygen ratio 2:3 is
1) Bi 2) Sn 3) Na 4) Ba​

Answer 1

Answer:Ba

Explanation:

Answer 2

Answer:

The metal is 1) Bi.

Explanation:

The reaction between bismuth and the air (oxygen) is given by the chemical reaction:

$4 B i+3 O_{2} \rightarrow 2 B i_{2} O_{3}$

The compound formed is bismuth (III) oxide. It is bluish white.

The bismuth trioxide is a famously called as “Dragon’s egg” because of its effect in fireworks. Due to its thermal expansion property, it is used as solid electrolytes. It is used while X-ray scanning.

Rest of the metals given in the options form $SnO_2$, $Na_2O$, and $BaO_2$.