a metal which is so soft that, it can be cut with a knife and a non-metal which is the hardest natural substance. (1 mark)
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Metal which can be cut with knife is SODIUM (Na)
Non- Metal which is considered as hardest material is DIAMOND which is allotropic form of Carbon.
Thanks.
Non- Metal which is considered as hardest material is DIAMOND which is allotropic form of Carbon.
Thanks.
KaranKN:
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