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6 Radioactivity

An atom of $37Li{}^{7}_{3}\mathrm{Li}$ loses two electrons. An electron has relative mass $11840\displaystyle \frac{1}{1840}$ and relative charge -1.

Which gives the change in relative mass and the change in relative charge of the atom?

[1]

Mass decreases by $2$ ; charge decreases by $2$ .

Mass decreases by $21840\frac{2}{1840}$ ; charge increases by $2$ .

Mass decreases by $2$ ; charge increases by $2$ .

Mass decreases by $21840\frac{2}{1840}$ ; charge decreases by $2$ .

6 Radioactivity Questions

An atom of $37Li{}^{7}_{3}\mathrm{Li}$ loses two electrons. An electron has relative mass $11840\displaystyle \frac{1}{1840}$ and relative charge -1.

Which gives the change in relative mass and the change in relative charge of the atom?

[1]

Mass decreases by $2$ ; charge decreases by $2$ .

Mass decreases by $21840\frac{2}{1840}$ ; charge increases by $2$ .

Mass decreases by $2$ ; charge increases by $2$ .

Mass decreases by $21840\frac{2}{1840}$ ; charge decreases by $2$ .