NCERT Exemplar Solutions Class 9 Science Solutions for Structure of the Atom - Exercise in Chapter 4 - Structure of the Atom

Question 16 Structure of the Atom - Exercise

Elements with valency 1 are

(a) always metals

(b) always metalloids

(c) either metals or non-metals

(d) always non-metals


The answer is (c) either metals or non-metals.


If the element shows positive valency it is a metal and if the element shows negative valency it will be a non-metal.

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