Question 4 of 10 Based on the trend in valence electrons across periods for main-group
elements, how many valence electrons does fluorine (F) have?
A. 5
O
B. 7
C. 4
D. 6

Aside from human impact, which of the following causes less water vapor production over a small area? (2 pderivartin

Which of the following did jj thompson discover about atoms? a)an atom has an internal structure. b) atoms are tiny indivisible particles. c)electrons orbit the nucleus of an atom. d) the nucleus of an atom contains protons and neutrons.

Which statement best describes the he properties of iconic compounds ?