Which labels use the correct chemical symbol for iron? Select all that apply.
An iron nail labeled Fe✓Bonne réponse
An iron nail labeled I
A sample of iron recorded as Ir
A sample of iron recorded as Fe✓Bonne réponse
A sample of iron recorded as In
Explication
Both labels using Fe correctly identify iron because Fe is its standardized symbol. I, Ir, and In are spelling-based guesses or symbols assigned elsewhere, so none can label iron.