When the isotope bismuth-213 emits an alpha particle, what new element results? (a) lead (b) platinum (c) polonium (d) thallium Which type of radiation from cosmic sources predominates on the inside...

When the isotope bismuth-213 emits an alpha particle, what new element results?

(a) lead

(b) platinum

(c) polonium

(d) thallium

Which type of radiation from cosmic sources predominates on the inside of a high-flying commercial airplane?

(a) alpha

(b) beta

(c) gamma

(d) None of these predominates; all three are abundant.