Redraw this structure with three other resonance structures

The molecular formula for caffeine is cshion402. which of the following elements is not found in caffeine?

Match the following items. 1. high-intensity bundle of energy being emitted from some decaying nuclei gamma ray 2. particle radiating from the nucleus of some atoms beta particle 3. negative particle identical to an electron but radiating from a decaying nucleus alpha particle

Afamily is one another name for a group on the table of elements.