Platinum, palladium and iridium are called noble metals because

Platinum, palladium and iridium are called noble metals because

Options

(a) Alfred Noble discovered them
(b) they are shining lustrous and pleasing to look at
(c) they are found in native state
(d) they are inert towards many common reagents

Correct Answer:

they are inert towards many common reagents

Explanation:

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