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Per NCERT §3.6.5, what fraction of all known elements are METALS, and where do they sit in the periodic table?
AOnly the noble gases
BExactly 50%; corners
CLess than 5%; bottom-right
DMore than 78%; on the LEFT side and centre
Answer & Solution
Correct answer: D. More than 78%; on the LEFT side and centre
Per NCERT §3.6.5, metals = >78% of known elements; located on left + centre. Non-metals at top right.
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