[填空题]
Cobalt-60 is a radioactive isotopel9j gu b9u6uo: of the element cobo* zb:bbsgxg9mq*e3 9alt that is used to treat thyro z*xbso99mb e3qb*g: gid cancer.
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.
