What are Cesium-134, Cesium -137, and Iodine-131? What are physical and chemical properties of each?

Can someone me with 6 to 10 plz this is for masteries test.

Which statement explains why the bonds between non metals tend to be covalent? the bonds are found to be nondirectional they have large differences in electronegativity they have small differences in electronegativity they have ions that produce an electrostatic pull

Which are forms of frozen water? check all that apply. dew frost hail rain sleet