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CHM1022 Tutorial Week 8 d-Block Chemistry Introduction

Questions to be completed BEFORE tutorial

1. What are some of the general properties of the first row d-block elements?

2. Complete the missing entries in the table below to give the names and symbols of the elements (in their

elemental form) alongside their electronic configurations:

Electronic Config. Element Symbol

[Ar]4s23d

7

[Ar]4s23d

3

[Ar]4s23d

8

[Ar]4s13d

5

[Ar]4s13d

10

3. Give the condensed electron configurations for: Zn2+

, Cr3+

, V5+

and Co2+

.

4. How many types of dorbitals are there, what are they called and how many nodal planes does each

orbital have? Draw each d orbital (shown against a set of Cartesian coordinates) and show each nodal

plane.

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Extension questions to try in your own time

E1. Why does atomic size stay relatively constant for the transition metals across a row?

E2. Using your knowledge of the first row transition elements, give the names and symbols for the

second row elements with the following electron configurations:

(a)

[Kr]5s24d

10

(b) [Kr]5s14d

8

(c)

[Kr]5s1

4d5

E3. What is the condensed electron configuration of Pd4+

?

E4. List the most stable oxidation states of the following transition metals. Is there a relationship between

most stable oxidation state and electron configuration?

Sc Ti V Mn

Fe Co Ni Cu Zn

E5. Using your knowledge of charges on common cations and anions, calculate the oxidation state of the

transition metal in each of the following compounds:

MnCO3 MoCl5 Na3VO4 Au2O3

PbCrO4 NiSO4 KMnO4 (NH4)2WO4

Fe2(SO4)3