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The element radium has a mass number of 226 and an atomic number of 88. How many neutrons does an atom of radium have?

A. 226.
B. 88.
C. 138.
D. 314.

Sagot :

Answer:

if you subtract 88 from 226 you get 138

so uour answer would be C.

Answer:

138

the conversion of an atom of one element into a different element through nuclear changes

A nuclear equation is balanced according to mass number. A chemical equation is balanced according to the total mass before and after the change

82

Some of the matter is converted to energy

Explanation:

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