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CBSE Class 10 Answered

how to make difference between periods and group?
Asked by SAVI BHIDE | 18 Feb, 2014, 11:15: AM
answered-by-expert Expert Answer

a)      In a periodic table, periods are horizontal rows (across) the periodic table, while groups are vertical columns (down) the table.

b)      Atomic number increases in both ways as you move down a group or across a period.

c)      Across group, an electron shell gets added to atom while across the period electron gets added to the same shell.

Answered by | 18 Feb, 2014, 12:02: PM

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