I went straight to a PhD after my bachelor's and I have lots of thoughts. -You get finished with your degree faster - you don't have this interim stage between BA and PhD. -You don't have to figure out how to pay for your MS, or worse, take on debt for it. -You get to jump right into what you really want to do.
What is the ionic charge of a sulfate ion? Which has a larger ionic radius a strontium ion or a rubidium ion? Both are ions and we should consider the ionic radius, not the atomic radius. Rubidium ion (Rb+) will have a larger IONIC radius than strontium ion (Sr2+). Both ions have â¦the same electronic configuration. But strontium ion has more number of protons in the nucleus. Hence it will have greater force of attraction between the nucleus and the valence electrons, resulting in smaller size.
Charges of an elements ions can be worked out by figuring out if the element will GAIN or LOSE electrons when they react. So Sulfur with electron configuration of 2,8,6 in its outer valance shell will need to GAIN two electrons to get 8, and have a stable outer shell. This will mean there are 2 more electrons then protons and the overall ion will have a negative charge. So S2- (-2) is the answer.