A stable element is an element that does not provide radioactivity. 1 kg of Gold will be 1 kg of gold even after 100.000 years. It is a stable element.
An unstable element (like Uranium or Plutoneum) gives off radioactivity and actually form new elements like lead. 1 kg of pure Uranium will be 500 grams of Uranium and 500 grams of lead after 100.000 years.
Times given and breakdown products are for illustrative purposes only. Degradation of unstable materials is not my science but I know the basics of it :-)
Regards.
Gases and metals
Yes they can, all of them. Metals, nonmetals, and metalloids are three different types of elements on the periodic table. One of the differences between them is the types of bonds they share with eachother: ionic, covalent, or metallic.
transition metals are not in any groups, however they are elements between group II & III of the periodic table
Transition elements form a bridge between left and right side of periodic table . Transition elements are placed in centre.
Transition Metals
Gases and metals
Each element has an atom that has different amounts of protons, neutrons, and electrons. This is the case for the element's atomic number and atomic mass. They are arranged by their differences on the periodic table of the elements. Most elements are metals. The three categories for the elements are metals, nonmetals and metalloids. ----
The elements of the 1st GROUP of the periodic table are called alkali metals. The elements of the 17th GROUP of the periodic table are called halogens. Alkali metals are soft metals whereas halogens are non-metals.
Yes they can, all of them. Metals, nonmetals, and metalloids are three different types of elements on the periodic table. One of the differences between them is the types of bonds they share with eachother: ionic, covalent, or metallic.
There are more elements and it's organized differently
transition metals are not in any groups, however they are elements between group II & III of the periodic table
they turn into hydrogen sulfide
Transition elements form a bridge between left and right side of periodic table . Transition elements are placed in centre.
Transition Metals
Transition Metals
They are both groups in the periodic table. Alkaline metals are group one. These are the least stable elements for e.g. Francium. Alkalie Earth Metals are group 2. The second most unstable elements. For e.g. Magnesium. Hope this helps!
element vs isotopes