arranged elements by atomic number.
bi and po
Compared to Mendeleev's periodic table which was arranged my atomic mass, Moseley's was, however, arranged by atomic number.
Groups 14 and 15 on the Periodic Table feature elements which are metals, non-metals, and metalloids.
It isn't on the periodic table since it is not a single element but a compound made of two elements: hydrogen and chlorine.
Very different. Each element is unique.
The periodic table is a list of elements, unique atoms. There's nothing about them that can be described as male or female.
The alternative periodic table, such as the Janet or Left-Step periodic tables, may have unique features like organizing elements based on electron configurations or emphasizing the relationships between elements in different ways compared to the traditional periodic table.
No, "Ro" is not a symbol on the periodic table of elements. Each element has a unique symbol consisting of one or two letters derived from its name.
Symbols are the short forms to represent elements. Each element will have a unique symbol.
Elements on a periodic table are ordered based on their atomic number, which represents the number of protons in the nucleus of an atom. This yields a unique and systematic arrangement of elements according to their properties.
The gaps were left for elements which were not discovered at that time. The properties which were estimated for the elements at that time was same as found later in those elements.
Because it is elemental. That is: it is not an alloy. It has a unique number of protons and neutrons.