Aluminum has atomic number 13, helium has atomic number 2, and silicon has atomic number 14.In the nuclear reaction 27Al + 4He 30Si + ( ) the missing particle is:
A) an particle
B) a positron
C) an electron
D) a proton
E) a neutron
Correct Answer:
Verified
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A)a helium nucleus
B)an electron
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A)a helium atom with
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