0
Promethium exist in nature only in traces; it is supposed that the Earth crust contain less than 1 kg promethium.
Wiki User
∙ 8y ago
Add your answer:
Earn +20 pts
What is the sixty first element in the periodic table of the elements?
Promethium
What does Pm stand for in the periodic table?
Promethium
What do the first 82 elements in the periodic table have in common?
The first 82 elements are all stable and not radioactive, except for technetium and promethium. Most elements after 82 are unstable.
What is the name of the table of elements?
A Periodic table The Periodic Table of the Elements.
Which can be found on a periodic table elements compounds or mixtures?
Elements are found on periodic table. Compounds are not present on periodic table. The table does not contains mixture.Elements can be found on a periodic table. Compounds can be made by bonding two or more elements. But they are not depicted on the periodic table.
What is the sixty first element in the periodic table of the elements?
Promethium
How many elements are natural in the periodic table?
90: The first 92 elements except technetium and promethium.
How many elements in the periodic table natural?
90: The first 92 elements except technetium and promethium.
What are radioactive elements on the periodic table?
In general, the elements with higher atomic numbers are the most radioactive and they are found at the bottom of the Periodic Table of Elements
Were on the periodic table is promethium?
61
What group on the periodic table are synthetic elments?
Technetium (43), Promethium (61), and all the transuranic elements are synthetic.
What does Pm stand for in the periodic table?
Promethium
All of what element's isotopes are radioactive?
Technetium, Promethium, and all elements heavier than Bismuth.
What do the first 82 elements in the periodic table have in common?
The first 82 elements are all stable and not radioactive, except for technetium and promethium. Most elements after 82 are unstable.
What is the name of the table of elements?
A Periodic table The Periodic Table of the Elements.
How are the elements arranged?
atomic number
Which are the naturally occurring elements?
Everything in the Periodic Table up to Uranium (92). Wrong, not everything, the elements Technetium (43) and Promethium (61) do not occur naturally.
