What particle is needed to complete this nuclear reaction?

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What particle is needed to complete this nuclear reaction?

222Rn ------> 218Po + ______

a.) an alpha particle
b.) a beta particle
c.) a hydrogen atom
d.) a neutron

2006-11-01 14:50:42 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry

3 answers

2006-11-01 14:52:15 · answer #1 · answered by Anonymous · 0⤊ 0⤋

a) an alpha particle. An alpha particle is a helium nucleus, two protons and two neutrons. The loss of the two protons is what causes the atom to change from radon to polonium, and the additional loss of the two neutrons is why the weight drops by four instead of by two.

2006-11-01 14:54:21 · answer #2 · answered by Amy F 5 · 1⤊ 0⤋

a)alpha

2006-11-02 04:55:15 · answer #3 · answered by science teacher 7 · 0⤊ 0⤋