Physics
The graph (fig A) illustrates the correlation between the number of protons (x-axis) and the number of neutrons (y-axis) for elements A, В, C, D, and E in the periodic table. These elements are denoted by the letters rather than their conventional symbols. When the element C, depicted in the graph, undergoes radioactive decay, it releases radioactive rays. When these rays are directed into the plane of the paper in the presence of a magnetic field, as indicated in the fig B, they experience deflection, causing them to move upwards.
(a) Name the radioactive radiations emitted by the element C.
(b) Identify the daughter element from the graph.
(c) Name the law used to identify the radioactive radiations emitted by the element.
Answer
(a) Beta radiations.
(b) The daughter element is E because emission of beta particle reduces one neutron from C and increases it's one proton so the element with one neutron less than C and one excess proton will be the daughter element which is clearly E as seen from the graph.
(c) Fleming's left hand rule.
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