Science, asked by rao77019894, 7 months ago

how many groups and how many periodis are these in modern periodic table?

Answers

Answered by Anonymous

Answer:

There are currently seven complete periods in the periodic table, comprising the 118 known elements. Any new elements will be placed into an eighth period; see extended periodic table.

...

Period 1.

Group118Atomic # Name1 H2 He

Answered by sameeha343

Answer:

Hope the answer is friend

Explanation:

There are currently seven complete periods in the periodic table, comprising the 118 known elements. Any new elements will be placed into an eighth period; see extended periodic table.

...

Period. 1.

Group 1 18

Atomic # Name1 H 2 He

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