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Why do metals have a large number of fre...

Why do metals have a large number of free electrons ?

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In metals, the electrons in the outer most shells are loosely bound to the nucleus. Even at room temperature, there are a large number of free electrons which are moving inside the metal in a random manner.
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Knowledge Check

  • Statement-I: Alkali metals are very soft metals Statement-II: Since the atoms of alkali metals have bigger kernels and smaller number of valence electrons, the metallic bonds in them are very weak and hence they are soft

    A
    Statements-I and II are correct but statement-II is not the correct explanation of statement-I
    B
    Statements-I and II are correct and statement-II is the correct explanation of statement-I
    C
    Statement-I is correct but statement-II is wrong
    D
    Statement-I is wrong but statement-II is correct.
  • Statement-I: Alkali metals are very soft metals Statement-II: Since the atoms of alkali metals have bigger kernels and smaller number of valence electrons, the metallic bonds in them are very weak and hence they are soft

    A
    Statements-I and II are correct but statement-II is not the correct explanation of statement-I
    B
    Statements-I and II are correct and statement-II is the correct explanation of statement-I
    C
    Statement-I is correct but statement-II is wrong
    D
    Statement-I is wrong but statement-II is correct.
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    When a current is established in a wire, the free electrons drift in the direction opposite to the current, Does the number of free electrons in the wire continuously decrease?

    Assume that each atom in a copper wire contributes one free electron. Estimate the number of free electrons in a copper wire having a mass of 6.4g (take the atomic weight of copper to be 64g mol^(-1).

    Assertion (A): Transition metals form large number of complexes. Reason (R): Transition metals are small and highly charged and they have vacant low energy orbitals to accept an electron pair donated by other groups,