The atomic number of an element that belongs to the IVA group and 4th period is ___________.

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Solution

Groups: The arrangement of elements with similar physical and chemical properties into a vertical column is called a group.
Periods: The arrangement of elements with no similar properties into a horizontal row is called a period.
1.Element that belongs to IVA group and 4th period is 32 - Germanium(Ge)
2.It's electronic configuration is 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p²
3.Period can be known from the valence shell of an atom, group can be known from the number of valence electrons(4s² 4p²) =4
Hence, atomic number 32 belongs to IVA group and 4th period.
Thus, The atomic number of an element that belongs to the IVA group and 4th period is 32.

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