how can i determine the period number and group number of an element?

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how can i determine the period number and group number of an element?

2006-09-14 00:38:14 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry

3 answers

From the periodic table of the elements.

2006-09-14 00:40:29 · answer #1 · answered by Anonymous · 0⤊ 1⤋

the higest energy level of an element indicates it's period number
while the number of the electrons in the last energy level incates the group number.

2006-09-14 00:46:10 · answer #2 · answered by RhodZ 1 · 0⤊ 0⤋

by knowing there atomic number

2006-09-14 00:45:30 · answer #3 · answered by SdM 4 · 0⤊ 0⤋