Dubnium

Dubnium ( Db ) :

Define: Dubnium Is transectinides metal. It is place below Tantalum . It is man made element. It is a transuranic element. It is produce artificially by bombarding californium 249 isotopes with nitrogen 15 . It is toxic in nature due to radioactivity.

Discovery : it is discovered in 1970 by scientist Berkeley and Dubna .

Origin of name : the name gives form the Russian town Dubna

Physical properties :

Atomic symbol: Atomic symbol of Dubnium is Db

Atomic number : Atomic number of Dubnium is 105

In Dubnium 105 proton and 105 electron is present

Atomic weight/ mass: Atomic weight of Dubnium is 268 Amu

In Dubnium 105 proton and 153 neutron is present

Position : it is place in periodic table at 7^th period and 5^th group

Block : it  is place in d block

Colour : Dubnium show silver colour

State : Dubnium present in solid form

Boiling point :Boiling point of Dubnium is unknown

Melting point :melting point of Dubnium is unknown

Isotopes:

•  ²⁶³Db: Atomic weight of this isotope is 263.05

In this isotope 105 proton ,105 electron and 158 neuron is present

• ²⁶⁷Db: Atomic weight of this isotope is 268.04 Amu

In this isotope 105 proton ,105 electron and 162 neutron is present

• ²⁶⁸Db: atomic weight of this isotope is 268.05 Amu

In this isotope 105 proton ,105 electron and 163 neutron is present

• ²⁷⁰Db: atomic weight of this isotope is 270.06 Amu

In this isotope 105 proton ,105 electron and 165 neutron is present

Chemical properties :

Electronic configuration

Electronic configuration of Dubnium is [ Rn ] 5f¹⁴ 6d³ 7s²

Electronic configuration in concert of shell is 2 ,8,18,32,32 11,2

Electronic structure

Valency :valency of Dubnium is 5

Atomic radius : Atomic radius of Dubnium is 139 pm

Uses:

• it is use only in research field

 

Question and Answer:                                                                                             

Q1. Define Dubnium

Q2. Who discovered Dubnium?

Q2. Physical properties of Dubnium

Q4. Write Atomic Symbol of Dubnium.

Q5. Write the Atomic number of Dubnium.

Q6. On which block Dubnium element is present?

Q7. What is the color of Dubnium?

Q8. What is the Boiling point of Dubnium?

Q9. What is the Melting point of Dubnium?

Q10. Write the Isotopes of Dubnium.

Q11. Show Electronic configuration of Dubnium.

Q12. Write Electronic Structure of Dubnium.

Q13. What is the Valency of Dubnium?

Q14. Write the uses of Dubnium element.