what do elements in the same period have in common?
How can one find the number of valence electrons for elements?
Ex: find the number of valence electrons for element F?
2007-10-07 16:12:23 · 4 answers · asked by Wii 2 in Science & Mathematics ➔ Chemistry
The periods are horizontal rows of the periodic table, not vertical rows. The # of valence electrons, however, ARE told by the vertical rows (knows as the group). Since F is in "group 17" it has 7 electrons (see attached link for #s)
2007-10-07 16:20:46 · answer #1 · answered by Abby 2 · 0⤊ 0⤋
All the elements down each period have the same number of valence electrons. To this end, starting from the left, all the elements in the first period (column) have 1 valence electron; all the ones in the second period have 2 and so on and so forth.
Fluorine (F) has 7 valence electrons being seven columns from the left.
2007-10-07 23:17:36 · answer #2 · answered by Lucan 3 · 0⤊ 0⤋
elements in the same period have the same number of valence electrons
( i dont know about the 2nd one...)
2007-10-07 23:15:15 · answer #3 · answered by outerspacer194 3 · 0⤊ 1⤋
Elements in the same period have electrons in the same energy level.
Atoms want to get to an outer layer of 8. Fluorine has seven in its outer layer. How many electrons does it take to get to 8?
2007-10-07 23:16:02 · answer #4 · answered by reb1240 7 · 0⤊ 0⤋