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The borax bead is due to formation of

Options

  1. Ametal meta borates
  2. Bmetal tetra borates
  3. Cboron trioxide
  4. Dmetal oxides

Correct answer

A. metal meta borates

Step-by-step solution

N a 2 B 4 O 7 . 10 H 2 O → Δ 2 N a B O 2 + B 2 O 3 Metal oxide + B 2 O 3 → [Metal BO 2 ) n Metal meta borate coloured

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