Chapter 6.9, Problem 1CP

Interpretation Introduction

Interpretation:

The correct electron configuration of $\text{Ag}$ atom is to be identified.

Concept introduction:

The number of electrons in an element is equal to its atomic number. With the help of a number of electrons, the electron configuration of a given element can be deduced.

General rules for writing electron 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 $1s2s2p3s3p4s3d4p5s4d5p6s4f$

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.

To write an electron configuration, use noble gas in brackets for core electrons.