
How many elements make up the lanthanide series?
Answer
474.6k+ views
Hint:The f-block consists of two series lanthanoids and actinoids. Lanthanoids resemble one another more closely than do the members of ordinary transition elements in any series. They have only one stable oxidation state and their chemistry provides an opportunity to examine the effect of small size and nuclear charge along a series of otherwise similar elements.
Complete step-by-step answer:It may be noted that the atoms of Lanthanoids have electronic configuration as .
The Lanthanide series consists of fifteen elements ranging from Atomic number . The elements of the lanthanide series are depicted below:
Elements of the lanthanide series have many properties. Some of these are mentioned below.
1. They all are highly reactive metals.
2. These are good conductors of electricity.
3. All the elements of lanthanide series are silvery white soft metals and tarnish rapidly.
4. Density and other properties changes smoothly except for Eu and Yb and occasionally for Tm.
Note: Elements of Lanthanide series have many useful applications. They are used in the production of alloy steels for plates and pipes. They are also used in preparation of Misch metal, they also find their applications in petroleum cracking. Some oxides are used in television screens and similar fluorescing surfaces.
Complete step-by-step answer:It may be noted that the atoms of Lanthanoids have electronic configuration as
The Lanthanide series consists of fifteen elements ranging from Atomic number
Atomic number | Name of the Lanthanoid element | Symbol of the Lanthanide element |
Lanthanum | La | |
Cerium | Ce | |
Praseodymium | Pr | |
Neodymium | Nd | |
Promethium | Pm | |
Samarium | Sm | |
Europium | Eu | |
Gadolinium | Gd | |
Terbium | Tb | |
Dysprosium | Dy | |
Holmium | Ho | |
Erbium | Er | |
Thulium | Tm | |
Ytterbium | Yb | |
Lutetium | Lu |
Elements of the lanthanide series have many properties. Some of these are mentioned below.
1. They all are highly reactive metals.
2. These are good conductors of electricity.
3. All the elements of lanthanide series are silvery white soft metals and tarnish rapidly.
4. Density and other properties changes smoothly except for Eu and Yb and occasionally for Tm.
Note: Elements of Lanthanide series have many useful applications. They are used in the production of alloy steels for plates and pipes. They are also used in preparation of Misch metal, they also find their applications in petroleum cracking. Some oxides are used in television screens and similar fluorescing surfaces.
Recently Updated Pages
If y varies directly with x and y 25 when x 5 How do class 7 maths CBSE

Identify some indoor games from the list A Carrom B class 7 social science CBSE

For any positive Integer n prove that n3 n is divisible class 7 maths CBSE

What is the LCM of 8 12 18 and 24 class 7 maths CBSE

Convert the following percentage into decimal fractions class 7 maths CBSE

The length of a rectangle is 4 meters more than its class 7 maths CBSE

Trending doubts
Father of Indian ecology is a Prof R Misra b GS Puri class 12 biology CBSE

Who is considered as the Father of Ecology in India class 12 biology CBSE

Enzymes with heme as prosthetic group are a Catalase class 12 biology CBSE

A deep narrow valley with steep sides formed as a result class 12 biology CBSE

An example of ex situ conservation is a Sacred grove class 12 biology CBSE

Why is insulin not administered orally to a diabetic class 12 biology CBSE
