The elements belonging to p -block are to be identified. Concept introduction: According to the Aufbau principle, the subshell occupied by the last electron decides the block designation of an element. General rules for writing electronic configuration: Electrons will reside in the available orbitals of lowest possible energy. Each orbital can accommodate a maximum of two electrons. Electrons will not pair in degenerate orbitals if an empty orbital is available. Orbitals will fill in order of increasing energy 1 s 2 s 2 p 3 s 3 p 4 s 3 d 4 p 5 s 4 d 5 p 6 s 4 f . s -orbital can have 0–2 electrons. p -orbital can have 0–6 electrons. d -orbital can have 0–10 electrons. f -orbital can have 0–14 electrons.

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Chapter 6.9, Problem 4CP

Interpretation Introduction

Interpretation:

The elements belonging to p-block are to be identified.

Concept introduction:

According to the Aufbau principle, the subshell occupied by the last electron decides the block designation of an element.

General rules for writing electronic configuration:

Electrons will reside in the available orbitals of lowest possible energy.

Each orbital can accommodate a maximum of two electrons.

Electrons will not pair in degenerate orbitals if an empty orbital is available.

Orbitals will fill in order of increasing energy 1s 2s 2p 3s 3p 4s 3d 4p 5s 4d 5p 6s 4f.

s-orbital can have 0–2 electrons.

p-orbital can have 0–6 electrons.

d-orbital can have 0–10 electrons.

f-orbital can have 0–14 electrons.

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