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Shane Macguire Grade: upto college level
        The increasing order (lowest first) for the values of e/m (charge/mass) for electron (e), proton (p), neutron (n) and alpha particle (∝) is

a. e, p, n, ∝
b. n, p, e, ∝
c. n, p, ∝, e
d. n, ∝, p, e
3 years ago

Answers : (1)

Deepak Patra
askIITians Faculty
474 Points
										Neutron has no charge, hence e/m is zero for neutron. Next, ∝-particle (He2+) has very high mass compared to proton and electron, therefore very small e/m ratio. Proton and electron have same charge (magnitude) but former is heavier, hence has smaller value of e/m.

e/m : n < ∝ < p < e
3 years ago
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