7. if the atomic number of an element is 6 and its mass number is 14, how many
neutrons are contained in the nucleus?
a 14
b 20
с
6
d8

Ahypothrticalax type of ceramic material is known to have a density of 2.10 g/cm3 and a unit cell of cubic symmetry with a cell edge length of 0.57 nm. the atomic weights of the a and x elements are 28.5and 30.0 g/mol, respectively. on the basis of this information, which of the following crystal structures is (are) possible for this material: sodium chloride, cesium chloride, or zinc blende

All motion is caused by force? true or false

Nuclear decay is the spontaneous decay of one element into a. an x-ray b. a ray of light c. another element