Question

One of the ions of iron is iron(III). Part A Part complete What is the symbol for this ion? Express your answer as an ion. Fe3+ Previous Answers Correct Part B How many protons and electrons are in the ion? Express your answer as whole numbers separated by a comma. p,e− p , e − = Previous AnswersRequest Answer Incorrect; Try Again; 4 attempts remaining Part C Complete previous part(s) Part D Complete previous part(s)

Answer 1

Given,

Ion = Ferric ion , Fe³⁺

To calculate protons and electrons,obtain the atomic number of iron.

Iron(Fe) has a atomic number of 26,so number of protons = 26.This atomic number which denotes number of protons in an element always remains constant.Charge on an ion appears due to loss or excess of electrons.

Now,since the ferric ion has a +3 charge it means it has more protons than electrons,so number of electrons = 26 - 3 = 23 electrons.

p = 26

e^- = 23