Explain with using proper activity/experiment that metals are hard and strength are different in different metals.
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Hydrogen gas forms as the metals react with the acid to form salts. ... The experiment is done first on a smaller scale using test tubes (lesson 1 ... The selection of metals can vary according to what is available as small ... metals such as magnesium and zinc, even though reactions are different at
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There are some metals hard which indicates the presence of covalent bonds. .Higher the number of unpaired electrons present in the transition metals, more is the number of covalent bonds formed by them. This further increases the hardness of the metal and its strength.
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