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  • The elements of group IA, IIA and IIIA are ______.

    metals
    none of them
    non- metals
    all of them
    metalloids
    inert gases
  • The reactivity of non- metals ______ on moving from top to bottom in a group.

    all of them
    non of them
    remain constant
    increases
    doubles
    decreases
  • The d- sub shell has maximum ______ electrons.

    fourteen
    two
    one
    eight
    six
    ten
  • The d- block elements are also known as ______.

    non- metals
    inert gases
    alkalis
    metals
    transitional elements
    metalloids
  • The elements in a periodic table is divided into ______ blocks.

    four
    fourteen
    eight
    ten
    two
    sixteen
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