10 Which of the fabbwrne staterverts reg a. \'adocther dear ?.txssies .esuti. Wh

Question

10 Which of the fabbwrne staterverts reg a. 'adocther dear ?.txssies .esuti. What tyse of radioactive decay wuld e expected for the unitablea A seutros embsion B positronei aigho partile ession E. gamma ray emssiom :2. Carbon-34 has a haf te of 5730 yr. A iving organihm bas an actity of 5.2 courts per mite lcpmi per gram of carbon f a bone is determined to have an activity of 1.80 cpm per gan of carbon A. 5730 ye B 37,200yr C32.00yr D 8000 13,500 13. Weich of the Solowing changes occur to the rudleus when a heay element undengces alph panicle emasion? A Only the number of neutrors decreases 8 Only the sumber of protone decreases C. Only the nomber of neutrons increaset D Only the number of protons ncreases E. Both the mumber of nestroes and protons decreases

Explanation / Answer

10.

(A) Radioactive decay process result in a change in the nucleus of the isotope undergoing reaction.

11.

(a) Neutron emission as the number of protons are higher than the number of neutrons.

13.

(E) Alpha emission involves in the decrease of both protons and neutrons.

Alpha particle = 42He

SO, it involves in the decrease of 2 protons and 2 neutrons. ( or 4 units of mass of number)

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