Periodicity is one of the most fundamental aspects of the periodic table of the elements. Here is an explanation of what periodicity is and a look at the periodic properties. The modern periodic table is very similar to Mendeleev’s table, but today elements are ordered by increasing atomic number, which reflects the number of protons in an atom.
I don’t no
i got 86% only 2 mcqs was wrong
i got 92% but the answer to one question was wrong.carbon is the bigger size atom in the following…
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