[填空题]
Cobalt-60 is a radioactiv:ik6;e 1xd +owi7.p m3 dumgeapm.7y se isotope of yb34zw1r kwy9 the element cobalt that is used to treat thyroid canc3 4zr9w 1ybkywer.
1. 1.State the full electron configuration of cobalt and chromium.
2.Explain what is special about the electron configuration of chromium.$^{60}_{27}$
3.State the atomic symbol notation for the cobalt-60 isotope.
One atom of cobalt-60 undergoes beta decay, releasing an electron and energy with a frequency of $7.65\times10^{19}Hz$ to form nickel-60.
2. 1.Using section 1 of the data booklet, calculate the wavelength of energy released from beta decay. $\times10^{-12}$m
2.Using section 3 (Section 5- 2025 Syllabus) of the data booklet and your answer to (b) (i), deduce the type of electromagnetic radiation emitted.
3. 1.Define orbital.
2.Sketch the shapes of an s-orbital and a p-orbital.
