Question 14 of 15 14. A hospital in Alice Springs needs 12 micrograms of the radioisotope Technetium-99m, but
the sample must be flown from a hospital in Sydney. If the half-life of Tc-99m is 6 hours,
and the delivery time between the two hospitals is 24 hours, how much must be
produced in Sydney to make sure that the correct amount arrives in Alice Springs?
(1 point)

The image compares the arrangement of electrons in two different neutral atoms. a figure labeled atom q has a shaded sphere at the center of three concentric circles. the innermost circle has two black spheres. the middle circle has six black spheres. to the left of this figure is another figure labeled atom p. atom p has a shaded sphere at the center of three concentric circles. the innermost circle has two black spheres. the middle circle has seven black spheres. which of the following best explains the position of the two atoms in the periodic table? atom p has an estimated zeff of 7 and is therefore to the left of atom q, which has a zeff of 6. atom p has an estimated zeff of 7 and is therefore to the right of atom q, which has a zeff of 6. atom p has an estimated zeff of 5 and is therefore below atom q, which has a zeff of 4. atom p has an estimated zeff of 5 and is therefore above atom q, which has a zeff of 4.