Question

how many periods and groups were there in the modern periodic table​

Answer 1

Answer

✭ There are seven periods and eighteen groups in the Modern periodic table

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☯ Know More

• The sixth and the seventh periods are the longest periods in the periodic table.

• The Periodic table was made by Dmitri Mendellev.

• The modern periodic table was arranged on the basis of their atomic number, their electronic configuration and similarity of their chemical properties.

• There were many ways created to arrange the elements in the periodic table, but now we use the Modern Periodic table.

• The periodic table help use in, one makes life simpler and two it makes it so that we can do more research on these elements.

• So far we have found 118 Elements on which 96 are found naturally and some are man made.

• We don't see further elements because the elements become heavier and the nucleus becomes large.

• This makes these Compounds unstable so that they don't last long.

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Answer 2

$\large\sf ➲{\underline{ \underline \color{darkgreen}{question}}} \\ \\ \sf \: How \: many \: periodic \: and \: groups \: were \: there \: \\ \sf in \: the \: \red{modern \: periodic \: table \: \: } \large? \:$

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$\large\sf ➲{\underline{ \underline \color{darkgreen}{answer}}} \\ \\ \sf \: There \: are \: \purple{ seven} \: periodic \: and \: \\ \sf \pink{eighteen} \: groups \: in \: the \: modern \: \\ \sf periodic \: table.$

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$\large\sf ➲{\underline{ \underline \color{darkgreen}{explore \: more - }}}$

❥ The modern Periodic law -

• The physical and chemical properties of the elements are periodic functions of their atomic numbers

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• ❥118 Elements are present in the Periodic Table.

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• ❥On the table, each square includes a number and letters.

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• ❥In 1869, a Russian scientist called Dmitri Mendeleev invented the periodic table.

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• ❥ The horizontal rows (which go from left to right) are called 'periods'and the vertical columns (going from up to down) are called 'groups'.

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