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In the periodic table below, shade all the elements for which the neutral atom has a valence electron configuration of ns2np1 , where n stands for an integer.

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Answer:

The group III A (Al, Ga, B, In, TI) has such types of valence shell electronic config.

Explanation:

  • B = [[He] 2s∧2 2p∧1
  • Al = [Ne] 3s∧2 3p∧1
  • Ga = [Ar] 4s∧2 3d∧10 4p∧1
  • In = [Kr] 5s∧2 4d∧10 5p∧1
  • TI= [Xe] 6s∧2 4f∧14 5d∧10 6p∧1

Answer: This electronic configuration belongs to Group 13.

Explanation:

We are given:

The general valence electronic configuration of the elements as [tex]ns^2np^1[/tex] where n = 2, 3, ...7

The number of valence electrons for this configuration are 3. This configuration belongs to p-block elements. The group to which this configuration belongs is Group 13.

The elements present in Group 13 are Boron (B), Aluminium (Al), Gallium (Ga), Indium (In), Thallium (Tl) and Ununtrium (Uut).

The green colored portion in the image belongs to Group 13.

Ver imagen RomeliaThurston