Some elements are stable on their own because they have a complete outer energy level. These elements are called noble gases. Hydrogen and Helium have a complete energy level with two electrons and all of the other elements are stable with eight. When an element doesn't have a complete outer energy level it is stable in a compound. This is because it is being combined with another element to complete it's energy level.
because of the valence toms
because of the valence toms
because of the valence toms
because of the valence toms
Periodic trends illustrate how some elements are very reactive while others are stable.
Salt, because is a chemical compound - NaCl; uranium, boron, hydrogen are chemical elements.
Some man-made elements are stable, while others are not. Stability of an element depends on its structure and nuclear properties. Elements beyond uranium on the periodic table tend to be less stable, with some being highly radioactive and decaying quickly.
because of the valence toms
The ionic compound formed between aluminum and oxygen is aluminum oxide, with the chemical formula Al2O3. In this compound, aluminum (Al) has a 3+ charge, while oxygen (O) has a 2- charge. The formula represents the combining ratio of the two elements to form a stable compound.
its because some are naturally stable like helium, when some like hydrogen have an extra electron in their electron clouds. That's why they are unstable. When they meet with an element with one extra electron they can be stable because the first electron cloud holds 2 electrons. ex. : hydrogen - 1 electron hydrogen - 1 electron adding both together will give you a full eletron cloud. Hope this helps!
The element my be rare because it is part of a compound and cannot be found as an element as itself in nature. The only way to get the element is to extract it from the compound. That may not be very easy.
Both compound and formula refer to specific combinations of elements in chemistry. A compound is a substance made of two or more different elements chemically bonded together, while a formula is a way to represent the elements and their ratio in a compound using chemical symbols and subscripts.