I need help with this chemistry fill in the blanks!

Identify one disadvantage to each of the following models of electron configuration: -dot structures -arrow and line diagrams -written electron configurations type in your answer below. (answer) -dot structures do not show the distribution of electrons in orbitals and take up a lot of space. -arrow and line diagrams take up a lot of space and make it difficult to count electrons. -written configurations make it easy to lose count of electrons and do not show the distribution of electrons in orbitals.

In which block of the periodic table is uranium (u) found? s blockd blockp blockf block

How many moles of bromine are needed to produce 3.23 moles of potassium bromide