Difference between revisions of "Transition Metal"

Revision as of 16:29, 18 December 2018

Key Stage 4

Meaning

Transition Metals (also known as transition elements) are a block of elements on the Periodic Table between Group 2 and Group 3.

About Transition Metals

Transition Metals have the physical properties of metals.

Transition Metals bond together with metallic bonds in which positive ions are surrounded by a sea of negatively charged electrons (known as delocalised electrons.

Transition metals
Period 4	₂₁Sc	₂₂Ti	₂₃V	₂₄Cr	₂₅Mn	₂₆Fe	₂₇Co	₂₈Ni	₂₉Cu	₃₀Zn
Period 5	₃₉Y	₄₀Zr	₄₁Nb	₄₂Mo	₄₃Tc	₄₄Ru	₄₅Rh	₄₆Pd	₄₇Ag	₄₈Cd
Period 6	₅₇La	₇₂Hf	₇₃Ta	₇₄W	₇₅Re	₇₆Os	₇₇Ir	₇₈Pt	₇₉Au	₈₀Hg
Period 7	₈₉Ac	₁₀₄Rf	₁₀₅Db	₁₀₆Sg	₁₀₇Bh	₁₀₈Hs	₁₀₉Mt	₁₁₀Ds	₁₁₁Rg	₁₁₂Cn

Melting Point

Transition Metals usually have high melting points because metallic bonds are very strong, keeping the atoms vibrating in fixed positions.

The transition metal melting points measured in Kelvin are written below each chemical symbol.

N.B. The Period 7 elements have not been included as they do not occur naturally and have not been made in large enough quantities to find their melting points.

Density

Transition Metals have a high density compared to other elements. However, many of the Actinides also have a density.

The transition metal densities measured in kilograms per metre cubed are written below each chemical symbol.

N.B. The Period 7 elements have not been included as they do not occur naturally and have not been made in large enough quantities to find their [density\|densities]].

Reactivity

The Transition Metals are much less reactive than elements in group 1 and group 2.

Most of the Transition Metals react slowly with Oxygen, Water and the Halogens at room temperature and some will not react at all.

For combustion to occur the Transition Metals must be heated to very high temperatures. However, some Transition Metals will not combust at all.

Ion Formation

Transition Metals form positive ions during chemical reactions.

@@ Line 4: / Line 4: @@
 ===About Transition Metals===
+: [[Transition Metal]]s have the [[Physical Property|physical properties]] of [[metal]]s.
+: [[Transition Metal]]s [[Chemical Bond|bond]] together with [[Metallic Bond|metallic bonds]] in which [[Positive Ion|positive ions]] are surrounded by a sea of [[Negative Charge|negatively charged]] [[electron]]s (known as [[Delocalised Electrons|delocalised electrons]].
 {| class="wikitable"
 |-
@@ Line 59: / Line 61: @@
 ====Melting Point====
-: [[Transition Metal]]s usually have high [[Melting Point|melting points]].
+: [[Transition Metal]]s usually have high [[Melting Point|melting points]] because [[Metallic Bond|metallic bonds]] are very strong, keeping the [[atom]]s [[Vibration|vibrating]] in fixed positions.
 {| class="wikitable"
 | style="height:20px; width:600px; text-align:center;" |The '''transition metal''' [[Melting Point|melting points]] measured in [[Kelvin]] are written below each [[Chemical Symbol|chemical symbol]].
@@ Line 78: / Line 80: @@
 |}
-====Reactivity|Reactivity====
+====Reactivity====
+: The [[Transition Metal]]s are much less [[Reactivity|reactive]] than [[element]]s in [[Group 1|group 1]] and [[Group 2|group 2]].
+: Most of the [[Transition Metal]]s [[Chemical Reaction|react]] slowly with [[Oxygen]], [[Water]] and the [[Halogen]]s at [[Room Temperature|room temperature]] and some will not [[Chemical Reaction|react]] at all.
+: For [[combustion]] to occur the [[Transition Metal]]s must be heated to very high [[temperature]]s. However, some [[Transition Metal]]s will not [[combustion|combust]] at all.
 ====Ion Formation====
-(Colour)
+: [[Transition Metal]]s form [[Positive Ion|positive ions]] during [[Chemical Reaction|chemical reactions]].
 ====Catalysts====