The atomic number is 5
The number of electrons is 7
The charge is

Which element has the lowest electronegativity? calcium(ca) gallium(ga) selenium(se) bromine(br)

What is the mass of 2.00 l of an intravenous glucose solution with a density of 1.15 g/ml?

Ants live on acacia trees in south america. the ants feed on sugars secreted by the trees. the trees provide room for the ants to live. the ants sting any other insect or animal that comes to eat the trees. what type of relationship is this?