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What are the common physical and chemical features of alkali metals?

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Alkali metals are

Alkali metals are

Knowledge Check

  • Peroxides of alkali metals are

    A
    Paramagnetic
    B
    Diamagnetic
    C
    Acidic in nature
    D
    Amphoteric in nature

  • In the first group (alkali metals) :

    A
    Lithium fluoride is most soluble fluoride (in water)
    B
    Lithium iodide has maximum covalent character out of all halides
    C
    Lithium carbonate is least thermally stable carbonate
    D
    Lithium oxide is most basic oxide

  • Following statements regarding the periodic trends of chemical reactivity of alkali metals and halogens are given. Which of these statements give the correct picture?

    A
    In both, the alkali metals and the halogens, the chemical reactivity decreases with increase in atomic number down the group
    B
    Chemical reactivity increases with increase in atomic number in both alkali metals and halogens
    C
    In alkali metals the reactivity increases but in the halogens, it decreases with increase in atomic number down the group
    D
    The reactivity decreases in the alkali metals but increases in the halgons with increase in atomic number down the group

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