Hassium (Hs) – Periodic Table (Element Information & More)

Hassium (Hs) element Periodic table

This is a SUPER easy guide on Hassium element.

In fact, the table mentioned below is the perfect information box (Which gives you every single detail about the Hassium element in Periodic table.)

So if you want to know anything about Hassium element, then this guide is for you.

Let’s finish this very quickly.

Hassium Element (Hs) Information

State of Hassium at STPSolid (predicted)
Position of Hassium in Periodic tableHassium in periodic table (Position)
Group: 8, Period: 7, Block: d
Category of Hassium elementHassium element category
Transition metals
Atomic number of Hassium, or 
Protons in Hassium
108
Neutrons in Hassium157
Electrons in Hassium108
Symbol of HassiumHs
Atomic mass of Hassium (most stable isotope) Hassium (Hs) atomic mass
277 u
Electrons arrangement in Hassium

or 

Bohr model of Hassium
Bohr model of hassium (Electrons arrangement in hassium, Hs)
2, 8, 18, 32, 32, 14, 2
Electronic configuration of Hassium[Rn] 5f14 6d6 7s2
Crystal structure of Hassium (predicted)crystal structure of hassium
HCP (hexagonal close packed)
Density of Hassium (predicted)27-29 g/cm3
CAS number54037-57-9

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Hassium in Periodic table

Hassium element is in group 8 and in period 7 of the Periodic table. Hassium is the d-block element and it belongs to transition metals group.

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Why is Hassium in Period 7?

Why is Hassium in Period 7

Let me ask you a question.

How many shells does a hassium atom have?

It’s 7. Right? 

You have already seen the bohr model of hassium atom in the above table.

From the Bohr model, it can be found that the number of orbits or shells in hassium is 7. Hence, as hassium has 7 orbits, it lies in period 7 of the Periodic table.

Why is Hassium in d-block?

Why is Hassium in d-block

Before knowing this reason, first of all I want to ask you a simple question.

How can you determine the blocks-wise position of elements?

The simple answer: The elements will lie in the s, p, d or f block will completely depend upon the subshell in which the last electron will enter.

For example; the electron configuration of hassium is [Rn] 5f14 6d6 7s2

So the last electron of hassium enters the d-subshell or d-orbital. 

Hence, hassium is the d-block element.

5 facts about Hassium

Interesting facts about hassium element are mentioned below.

  1. Hassium was discovered from “Hesse”, which is a state in Germany. Hence this element was given the name “Hassium”.
  2. Hassium was discovered by Peter Armbruster, Gottfried Munzenberg and other team members in 1984.
  3. Hassium is a radioactive element and it is only prepared in laboratories in very low quantities.
  4. Hassium has around 12 isotopes and all those isotopes are radioactive.
  5. The isotope 270Hs is expected to have a longest half life of 9 seconds.

Properties of Hassium

The physical and chemical properties of hassium element are mentioned below.

  • Hassium is highly radioactive and it has a very short half life (in seconds).
  • The predicted phase of Hassium is solid at STP.
  • The calculated atomic mass of the most stable isotope of Hassium is 277 u and its estimated density is between 27-29 g/cm3.
  • The common oxidation state predicted for hassium is +8, but also shows lower oxidation states like +2, +3, +4 and +6.
  • The predicted crystal structure of hassium is HCP (i.e hexagonal close packed).

Uses of Hassium

Hassium is generally used for research work in chemistry. There is no commercial use of hassium due to its expensive production and radioactive nature.

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References:
Chemical data: Wikipedia, Chemspider

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