D- block elements

Question 1

Where are the D-block elements located?

Answer 1

Between groups 2 and 3

Question 2

Why are they called the D-block elements?

Answer 2

Their outer shell electrons are located in the d level sub shell.

Question 3

Which two electronic configurations are different in the D-block?

Answer 3

Chromium and copper

Question 4

When are co-ordinate bonds formed?

Answer 4

When the shared pair of electrons is donated from one atom

Question 5

Name 3 shapes of the molecules

Answer 5

Tetrahedral, linear and octahedral

Question 6

Name some of properties of transition elements.

Answer 6

• Their atoms or ions have an incomplete d sub-shell.
• They form complexes
• They have variable oxidation states.
• The metals and their compounds show catalytic activity.
• They form coloured ions.

Question 7

What are transition metals?

Answer 7

Elements found in the middle of the periodic table and have an incomplete d sub-shell.

Question 8

Where are the first transition metals series?

Answer 8

From scandium to zinc

Question 9

What is a variable oxidation state?

Answer 9

A variable oxidation state is a value that determines the charge of the atom

Question 10

State the metallic nature of some of the transition metals.

Answer 10

• Dense.
• Good conductors of heat and electricity.
• Their melting and boiling points are higher than that of the s block elements.