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SYMBOLS OF THE ELEMENTS. IN THE PERIODIC TABLE, THE ELEMENTS ARRE ARRANGED IN ORDER OF INCREASING ATOMIC NUMBER.HERE ARE THE FIRST 20 ELEMENTS. HYGROGEN. HELYUM. LITHIUM. BERYLIUM. BORON. CARBON. NITROGEN. THANK YOU.
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IN THE PERIODIC TABLE, THE ELEMENTS ARRE ARRANGED IN ORDER OF INCREASING ATOMIC NUMBER.HERE ARE THE FIRST 20ELEMENTS.