Question

i need a 2 to 3 minute essay on periodic table groups and periods

Answer 1

Answer:

Groups and periods are two ways of categorizing elements in the periodic table. Periods are horizontal rows (across) the periodic table, while groups are vertical columns (down) the table. Atomic number increases as you move down a group or across a period.

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Answer 2

this may help you..

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.Periodic Table Essay. The periodic table is a table in which all of the known elements are listed. The table arranges the elements in order of increasing proton number to show the similarities of chemical elements. ... These elements can then be sub divided into 4 groups; Alkali, non-metals, transition & inner-transitions

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