The elements in group 7a are known by what name? transition metals halogens alkali metals alkaline earth metals noble gases

Neils bohr believed that electrons orbited the nucleus in different energy levels, based on strong support from

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.

The diagrams to the right show the distribution and arrangement of gas particles in two different containers. according to kinetic-molecular theory, which of the following statements is true? check all that apply. if the temperatures of both containers are equal, container a has greater pressure than container b. if the volume of container a decreased, its pressure would decrease. if the pressure in both containers is equal, container a has a lower temperature than container b.