Which metal is protected by a layer of its own oxide

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p-Block Elements - I

easy

Which metal is protected by a layer of its own oxide

$Al$

$Ag$

$Au$

$Fe$

Solution

Aluminium in air is ordinarily protected by a molecule-thin layer of its own oxide. This aluminium oxide layer serves as a protective barrier to the underlying aluminium itself and preventing chemical reactions with the metal.

Standard 11

Chemistry

Given below are the statements about diborane.

$(a)$ Diborane is prepared by the oxidation of $\mathrm{NaBH}_{4}$ with $\mathrm{I}_{2}$.

$(b)$ Each boron atom is in sp $^{2}$ hybridized state.

$(c)$ Diborane has one bridged $3$ centre$-2-$electron bond.

$(d)$ Diborane is a planar molecule.

The option with correct statement(s) is :

hard

(JEE MAIN-2021)

Explain the following :

$(1)$ Gallium has higher ionisation enthalpy than aluminum.

$(2)$ Boron does not exist as $B^{3+}$ ion.

hard

Explain physical and chemical properties of borax.

medium

In Goldschmidt aluminothermic process, thermite contains

medium

When orthoboric acid $({H_3}B{O_3})$ is heated, the residue left is

easy

Which metal is protected by a layer of its own oxide

Solution

Similar Questions

Explain the following : $(1)$ Gallium has higher ionisation enthalpy than aluminum. $(2)$ Boron does not exist as $B^{3+}$ ion.

Explain physical and chemical properties of borax.

In Goldschmidt aluminothermic process, thermite contains

When orthoboric acid $({H_3}B{O_3})$ is heated, the residue left is

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Explain the following :

$(1)$ Gallium has higher ionisation enthalpy than aluminum.

$(2)$ Boron does not exist as $B^{3+}$ ion.