Rn is the chemical symbol for Radon, an inert gas. Inert gasses don't like to react with other elements, therefore it is Calcium, whose chemical symbol is Ca, that is more reactive.
Ra
Group 2 metals (Be, Mg, Ca, Sr, Ba, Rn) have two electrons in their valence shell.
The electron configuration of thorium is [Rn]6d27s2.
[Rn] 7s2 is the noble gas notation for radium. A link is provided to the Wikipedia article on radium.
[Rn] 5f3 6d1 7s2
Rn is radon, a radioactive gas, atomic number 86. It is the product of radium decay.
RN's
There are plenty of avenues to train for becoming an RN. You can take classes at community colleges, and some universities also offer nusring majors. One of the best colleges to go to is Chaffey College in Rancho Cucamonga, CA.
In the field, a paramedic with ACLS certification, has more authority. In the hospital, clinic or any healthcare institution, an RN with ACLS certification has more authority.
I bought them in the "Woodbury Common Premium Outlet" New York in the Adidas factory store.
The starting pay for an RN at the hospital I work at is $35 /hour. This job would be on the med/surg floor. They pay a little more for the ICU/CCU RN's.
RN training takes one to two years longer than LVN training an goes more in depth into nursing skills. LVN's learn basic nursing skills like taking vitals and handling patients. RNs have greater responsibility and more involvement with complex medical procedures. RN training prepares them for this. LVN training is more introductory than RN training. RN training builds on the skills you learn as LVN.
The RN is a more advanced program of study. The RN can be take at the associate (two years) and bachelor (four year) degree level, while the LPN is typically a diploma program (nine to 12 months)
An obstetrician is a doctor so they get paid more.
Depends on where you live and the demographics of each region where RN's are employed for work. RN's who work for hospitals make considerably more than nurses who work for clinics or private offices, but then again, you became an RN for the unbeatable job security, and not the high pay. My brother's fiancee makes 36 an hour as an RN, my other brother's girlfriend, (I have two brothers), makes about 40,000 a year, but she was making more when working at a hospital.
CCRN are the initials of credentials earned by a RN- registered nurse, who has passed a exam for critical care thus the RN is critical care certfied. Critical care certification gives the RN more credibility, respect etc...
Usually an RN would make more money working in a hospital. That is not always the case. It depends on the hospital and the clinic. The difference in salary wouldn't be significant
A California RN can only be an RN in California. However, if that same RN was to get registered to be an RN in a different state, they could work there as well.