An isotope of rutherfordium, , is formed by the bombardment of californium-249 by carbon...

An isotope of rutherfordium, , is formed by the bombardment of californium-249 by carbon-12. In the process, neutrons are emitted. The new isotope formed decays rapidly, emitting an alpha particle.

(a) How many neutrons are emitted for every Cf-249 bombarded?

(b) Write the nuclear symbol for the isotope formed by the decay of Rf-257.