Which one of the following is an incorrect representation of the indicated parti

Question

Which one of the following is an incorrect representation of the indicated particle or nucleus? A) position beta B) neutron n C) helium-3 ^1_2He D) alpha particle ^4_2 He E) proton ^1_1P Which one of the following descriptions relating to nuclear reactions is correct? A) The ratio of neutrons to protons remains constant. B) The number of protons plus neutrons remains constant. C) The number of electron remains constant. D) The total charge changes. E) The total number of nucleons changes. Which one of the following is a subatomic particle closely related to the positron? A) proton B) electron C) negatron D) neutron E) neutrino Which of the following types of radioactive decay does not produce new clement? A) gamma emission B) electron capture C) beta emission D) alpha emission E) double beta emission ln rightarrow Cd + ? In the equation above, what particle or type of radiation needs to be included on the right hand side in order to balance it? A) alpha B) beta C) gamma D) positron E) proton Which one of the following equations correctly represents alpha decay of Rn? A) Rn rightarrow Po + ^4_2He B) Rn rightarrow Pb + ^2_4 He C) Rn rightarrow Fr + D) Rn + He rightarrow Ra E) Rn rightarrow At + Which one of the following equations correctly represents positron decay of Which one of the following equations correctly represents electron capture by the Po nucleus ? A) Po rightarrow At + B) Po rightarrow Bi + C) Po + e rightarrow Bi D) Po + e rightarrow At E) Po +

Explanation / Answer

1.helium-3 (C) its notation is 23He

2.B. in a nuclear reaction the number of protons plus neutrons remains constant

3.The subatomic particle closely related to positron is Electron (B)

4. A . Gamma emmission of radio activity doesnot produce new element

5.D. positron

6.A

7.E

8.C

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