Atoms of elements at the top of a group on the periodic table are smaller than the atoms of elements at the bottom of the group.
How does this help explain the difference in the reactivity of metals within a group?

How have the competing explanations' experiments on atoms affected the development of the atomic model?

Photoelectrons with a maximum speed of 6.50 x 107 m/s are ejected from a surface in the presence of light with a frequency of 6.75 x 1014hz. if the mass of an electron is 9.10 x 10-31 kg, calculate in joules the maximum kinetic energy of a single electron. 3.84 x 10-15 j 1.92 x 10-15 j 5.92 x 10-23 j 3.07 x 10-16 j

Name the non metal condut electricity