What is one way to find the number of valence electrons in an element

Count the columns on the periodic table from left to right and the valence electrons the first column of elements has is one. Second column has 2 and so on until you reach 8. The only exception is helium does not have 8. It is in the 8th column but it has 2 valence electrons.

Julia would be observing a. static electricity was caused by her sweater rubbing against her shirt and transferring electrons. she didn't touch anything metal, so that would cancel out b.she most likely didn't rub her sweater against her hair either, so that cancels out c.she also didn't scoot across the carpet while trying to take her sweater off, that cancels out d.so that leaves a.a. is correct.