This is a SUPER easy guide on Lawrencium element.
In fact, the table mentioned below is the perfect information box (Which gives you every single detail about the Lawrencium element in Periodic table.)
So if you want to know anything about the Lawrencium element, then this guide is for you.
Let’s finish this very quickly.
Lawrencium Element (Lr) Information
|State of Lawrencium at STP||Solid (predicted)|
|Position of Lawrencium in Periodic table|
Group: actinides, Period: 7, Block: f
|Category of Lawrencium element|
Inner transition metals
|Atomic number of Lawrencium, or |
Protons in Lawrencium
|Neutrons in Lawrencium||159|
|Electrons in Lawrencium||103|
|Symbol of Lawrencium||Lr|
|Atomic mass of Lawrencium (most stable isotope)|| |
|Electrons arrangement in Lawrencium|
Bohr model of Lawrencium
2, 8, 18, 32, 32, 9, 2
|Electronic configuration of Lawrencium||[Rn] 5f14 7s2 7p1|
|Electronegativity of Lawrencium|| |
1.3 (Pauling scale)
|Crystal structure of Lawrencium (predicted)|
HCP (hexagonal close packed)
|Melting point of Lawrencium (predicted)||1900 K or 1627 °C or 2961 °F|
|Density of Lawrencium (predicted)||14.4 g/cm3|
|Main isotope of Lawrencium||262Lr|
See how this Interactive Periodic Table helps you
- You can effortlessly find every single detail about the elements from this single Interactive Periodic table.
- You will get the detailed information about the periodic table which will convert a newbie into pro.
- You will also get the HD images of the Periodic table (for FREE).
Lawrencium in Periodic table
Lawrencium element is in period 7 and in actinides group of the Periodic table. Lawrencium is the f-block element and it belongs to inner transition metals group.
Click on above elements (in Periodic table) to see their information or Visit Interactive Periodic Table (which shows names, symbol, atomic mass, electron configuration, electrons arrangement, etc. of all the elements)
Click on above elements (in Periodic table) to see their information
Why is Lawrencium in Period 7?
Let me ask you a question.
How many shells does lawrencium have?
It’s 7. Right?
You have already seen the bohr model of lawrencium atom in the above table.
From the Bohr model, it can be found that the number of orbits or shells in lawrencium is 7. Hence, as lawrencium has 7 orbits, it lies in period 7 of the Periodic table.
Why is Lawrencium in f-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 lawrencium is [Rn] 5f14 7s2 7p1.
So the last electron of lawrencium enters the f-subshell or f-orbital.
Hence, lawrencium is the f-block element.
5 facts about Lawrencium
Interesting facts about lawrencium element are mentioned below.
- The element was named “Lawrencium” to honor the chemist Ernst Lawrence.
- Lawrencium was discovered by Georgy Flerov and his colleagues at Joint Institute of National Research and this element was also independently discovered by Albert Ghiorso and his colleagues at Lawrence Berkeley National Laboratory.
- There are 14 isotopes of lawrencium and all these isotopes are radioactive in nature.
- Out of all the isotopes of lawrencium, the most stable isotope is 266Lr, which has a half-life of 10 hours.
- Lawrencium is a synthetic element and it is prepared artificially by humans. Till now, very less quantity of lawrencium has been produced.
Properties of Lawrencium
The physical and chemical properties of lawrencium element are mentioned below.
- Lawrencium is a radioactive element and it is harmful too.
- Just similar to the other actinides, the lawrencium element also shows the +3 and +2 oxidation states.
- The predicted melting point of lawrencium is 1627 °C.
- The atomic mass of the most stable isotope of lawrencium is 266 u and its predicted density is 14.4 g/cm3.
- The predicted crystal structure of lawrencium is HCP (hexagonal close packed).
Uses of Lawrencium
Lawrencium is generally used for scientific research work. It has no commercial uses due to its radioactive nature as well as scarcity.
Free Gift for you: Interactive Periodic Table
Let me tell you how this Interactive Periodic Table will help you in your studies.
1). You can effortlessly find every single detail about the elements from this single Interactive Periodic table.
2). You will get the detailed information about the periodic table which will convert a newbie into pro.
3). You will also get the HD images of the Periodic table (for FREE).
Checkout Interactive Periodic table and download it’s high resolution image now (It’s FREE)