Avalid lewis structure of cannot be drawn without the central atom violating the octet rule. pf5 pcl3 so3 ccl4 co2

(apex) when a cup of water is dropped, as the cup falls, the water in the cup falls out true or false?

Reduction is a reaction which results in a in electrons and a in positive charge of the atom or ion 1) a- loss 1) b- gain 2) a-increase 2) b-decrease

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?