The properties of two elements are listed below. element atomic radius (pm) ionic radius (pm) first ionization energy (kj/mol) electron affinity (kj/mol) electronegativity br 114 195 1140 –325 3.0 k 243 152.2 418.8 –48.4 0.82 which prediction is supported by the information in the table? k will give up an electron more easily than br. both k and br will have the same pull on electrons. k will have a smaller size in comparison to br. both k and br will produce ions of the same size.

In a water molecule, hydrogen and oxygen are held together by a(an) bond. a) double covalent b) ionic c) nonpolar covalent d) hydrogen e) polar covalent

Which of the following nuclei would be the least stable a 2 protons, 2 neutrons b 1 proton 1 neutron c 1 proton 3 neutrons d 1 proton 2 neutrons

You just calculated that the heat of fusion for chloromethane is 6400 j/mol. the heat of fusion for hydrogen is 120 j/mol.? which of the following account for this difference? more than one correcta. chloromethane can absorb more energy at the same temperature. b. hydrogen has stronger intermolecular forces than chloromethane. c. hydrogen molecules can pack more closely than chloromethane molecules. d. chloromethane experiences dipole-dipole interactions. e. chloromethane has a higher molar mass than hydrogen.