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Language of Chemistry — CHEMISTRY STD 8 — Question

ICSE BoardEnglish MediumSTD 8CHEMISTRYLanguage of Chemistry4 Marks
Question
Certain metals exhibit variable valencies which include valencies: $1^+, 2^+, 3^+\  \& \ 4^+$. State the variable valency of the following metals $-$
$(a)$ Copper
$(b)$ Silver
$(c)$ Mercury
$(d)$ Iron
$(e)$ tin
$(f)$ Lead
$[$write each symbol with the variable valency$]$
✓

Answer

$(a)$ Copper : exhibits valency $1$ and $2$
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$(b)$ Silver : exhibits valency $1$ and $2$
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$(c)$ Mercury exhibits valency $1$ and $2$
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$(d)$ Iron has variable valency $2$ and $3$​​​​​​​
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$(e)$ Tin has variable valency $2$ and $4$​​​​​​​
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$(f)$ Lead has variable valency $2$ and $4$​​​​​​​
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