Write the oxidation states in the spaces underneath the underlined elements and suggest whether the underlined atoms or ions have undergone oxidation or reduction in each of the following equations

Cl2 + 2KBr—>Br2 + 2KCl
—— —

PbO + H2 —>Pb + H2O
—- —-

Which orbitals form a pi bond? a. the s orbital and three p orbitals b. the s orbital and two p orbitals c. overlapping p orbitals d. overlapping hybrid orbitals

Consider hydrogen in an excited state n = 5n=5 that emits photons to reach the ground state. there are various possible transitions other than straight to the ground state that can occur; for example, it can drop to the n = 3n=3 state followed by the n = 3n=3 to the ground state transition. which of the possible transitions will result in the emission of a photon in the visible region?

What type of radiation is lead emitting in the following equation? alpha particles beta particles gamma rays