Predict whether ionization energy required to remove an electron from lithium (LI) would be more or less than that required to remove an electron from sodium (Na). Explain your prediction in terms of the Coulombic force and the octet rule.

Can someone me with questions 15 to 17 plz.

Which of the following observations indicates that there is a small, dense, positively charged part in the center of an atom? some uncharged particles are scattered by a gold foil. all uncharged particles are attracted towards a gold foil. all positively charged particles pass straight through a gold foil. some positively charged particles bounce back from a gold foil.

Calculate the molarity of each aqueous solution: a. 78.0 ml of 0.240 m naoh diluted to 0.250 l with water b. 38.5 ml of 1.2 m hno3 diluted to 0.130 l with water