In the transmutation reaction that results in the formation of berkelium-243,shown below,the nucleus that is bombarded by alpha particles is ________.
? + 
He → 
Bk + 2 
n
Definitions:
Conversion Value
The worth of a convertible security if it is converted into a different asset, usually common stock, at the current market price.
Convertible Bond
A type of bond that can be converted into a predetermined amount of the issuing company's equity at certain times during the bond's life, usually at the discretion of the bondholder.
Common Stock
Equity ownership in a corporation, with voting rights and potential for dividends, representing a claim on part of the company’s earnings and assets.
Conversion Ratio
The specified number of shares that can be exchanged for one unit of the convertible security.
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