The periodicity of nonmetals is that reactivity increases from left to right across a period, through group 17, the halogens. As you move down a group, reactivity decreases. Fluorine is the most reactive element.
The periodic table tells you chemical elements. :)
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the benefit is that you can tell the atomic number atomic mass its symbol and where it is on the periodic table
where tell me then
Data from the periodic table for rhodium: the chemical symbol is Rh, it is a transition metal, it is a solid, it is a platinum metal, Rh has a low chemical reactivity, the atomic number is 45, Rh has 45 protons an 45 electrons, it is in the period 5, it is in the group 9, rhodium has high melting and boiling temperatures.
Atomic weight
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The Periodic Table tells you how many protons are in an atom by their Elemental Number. In other words, yes, the Periodic Table tells you how many protons are in an atom.
You can tell it is an element as it is on the periodic table, as Fe, in the transition metals block.
Electronegativity increases while moving left to right along the period and decreases down the group in the periodic table.
The atomic number of each element is on the periodic table. The elements are arranged on the periodic table in order of increasing atomic number.
The periodic table is in order of atomic mass