Periods in periodic table

in #science7 years ago

Hy!

Steemit Friends!

I am going to describe the important topic of chemistry i.e periods in the periodic table.

The arrangements of elements in horizontal rows of periodic tables are called periods.

  • First period is called short period .It consist of only two elements.
  • 2nd & 3rd periods are called normal periods .it consists of eight elements each.
  • 4th & 5th periods consists of 18 elements each and are called long periods.
  • 6th and 7th periods are called very long periods .It consist of 32 elements each .
  • 7th period is incomplete .


Thanks.


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