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An Intiative by Sri Chaitanya
a
5% of a lanthanoid metal, 95% of iron and traces of S, C, Ca and Al
b
95% of an actinoid metal, 5% of iron and traces of S, C, Ca and Al
c
95% of lanthanoid metals and 5% of iron and traces of S, C, Ca and Al
d
95% of a transition metal, 5% of iron and traces of S, C, Ca and Al
answer is C.
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