Materials and Construction
Out of the following, copper vessels are the most suitable for the storage of

Dry chlorine & dry fluorine
Bromine
Nitric acid (95% and fuming)
Phosphoric acid (95%) & sulphuric acid (95% and fuming)

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Materials and Construction
Nickel as a material of construction

Is used as an alloying element for both ferrous & non-ferrous alloys
Is paramagnetic below 415° C (its Curie temperature)
Dimagnetic
Has a body centred cubic (bcc) crystal lattice structure

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