Identify the correct statements from the foll | vedclass

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(C) Statement $a$ is correct: Borax bead test involves heating borax with a metal salt like $Co^{2+}$,forming a characteristic blue-coloured cobalt me

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$a, b$

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(C) Statement $a$ is correct: Borax bead test involves heating borax with a metal salt like $Co^{2+}$,forming a characteristic blue-coloured cobalt metaborate,$Co(BO_2)_2$.Statement $b$ is correct: The structural formula of borax is $Na_2[B_4O_5(OH)_4] \cdot 8H_2O$.Statement $c$ is incorrect: Boron trihalides $(BX_3)$ are electron-deficient compounds with an incomplete octet on the boron atom,making them Lewis acids,not Lewis bases.Therefore,statements $a$ and $b$ are correct.

Identify the correct statements from the following:
$a$) Borax gives blue coloured $Co(BO_2)_2$ when heated with $Co^{2+}$ salt.
$b$) The correct formula of Borax is $Na_2[B_4O_5(OH)_4] \cdot 8H_2O$.
$c$) Trihalides of boron are Lewis bases.

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Identify the correct statements from the following:$a$) Borax gives blue coloured $Co(BO_2)_2$ when heated with $Co^{2+}$ salt.$b$) The correct formula of Borax is $Na_2[B_4O_5(OH)_4] \cdot 8H_2O$.$c$) Trihalides of boron are Lewis bases.