element in period 18(helium,neon,argon,krypton,xenon,&radon)
True. In their vapor state, both Na and Hg exist as monoatomic molecules, with Na being represented as Na and Hg as Hg. This is because in their gaseous form, both elements exist as individual atoms rather than diatomic molecules.
Monoatomic means to have one atom. An anion is any ion that has a negative charge. An example of a monoatomic ion is S2- . Sulfur is the only atom in the atom, and it has a negative two charge.
Dmitri Mendeleev discovered the periodic law and created the periodic table of elements. He arranged elements by atomic mass and properties, leaving gaps for undiscovered elements which he later predicted and found to exist. This work laid the foundation for modern chemistry.
The long dashes on Mendeleev's periodic table represent gaps where elements had not yet been discovered but were predicted to exist based on the periodic pattern of elements. Mendeleev used these gaps to accurately predict the properties of the missing elements, leading to the discovery of new elements.
Element A does not exist on the periodic table. The elements on the periodic table are represented by their respective chemical symbols, such as H for hydrogen, O for oxygen, or Fe for iron.
True. In their vapor state, both Na and Hg exist as monoatomic molecules, with Na being represented as Na and Hg as Hg. This is because in their gaseous form, both elements exist as individual atoms rather than diatomic molecules.
There are a total of 118 elements known to exist on the periodic table.
Radioactive elements exist in all groups of the periodic table.
yes they exsist as monoatomic molecule in vapour state
Radioactive elements exist in all groups of the periodic table.
Monoatomic means to have one atom. An anion is any ion that has a negative charge. An example of a monoatomic ion is S2- . Sulfur is the only atom in the atom, and it has a negative two charge.
No, neon exists as a monatomic gas at standard temperature and pressure. It does not readily form diatomic molecules or other larger clusters like some other elements.
No most of them are not isotopes. Few elements exist as isotopes.
First of all it is a compound made of different elements, hence it cannot exist in periodic table. Periodic table is composed only of pure elements not in any combined form.
The nucleus consisting of Protons and Neutrons surrounded by one to several "shells" of orbiting electrons. The numbers of protons and neutrons for each element can be found in the periodic table of elements.
In the periodic table only the chemical elements appear; but tables for isotopes also exist.
In the Periodic Table of the Elements, a column (group) contains all elements that exist with the group number of electrons in the outer energy level of an atom of that element.