The ions produced in electron transfer repel each other by electrostatic attraction and this creates an ionic bond

Given that the molar mass of nano3  is 85.00  g/mol, what mass of nano3  is needed to make 4.50  l of a 1.50  m nano3solution? use  .6.75 g18.9 g255 g574 g

Which of the following pairs of elements belong to the same groupa. h and he b. li and bec. c and pb d. ga and ge

Ineed to find the answer of this question because i dont understand it