A radioisotope used for diagnosis must emit gamma rays of sufficient energy to escape from the body and it must have a half-life short enough for it to decay away soon after imaging is completed.

TRUE

FALSE

Is the animal farm poor true or false

The principal quantum number indicates what property of an electron? Position Speed Energy level Electron cloud shape

Three carbon atoms are linked by single covalent bonds such that they form the shape of a v. all of the unshared electrons form covalent bonds with hydrogen. how many hydrogen atoms does this molecule contain?

Alance this equation, and then enter the coefficients, in order, below. ccl4 (g) + o2 (g) ⇌cocl2 (g) + cl2 (g) express your answer as integers separated by commas (e. g., 1,2,3,4), where 1 indicates the lack of a coefficient.

Why are olivine and quartz never found together in an igneous rock?

What type of mixture is 100 ml of water with a little bit of salt?

Which statement explains why meiosis haploid cells rather than diploid cells

Which factors can affect the amount of coco mix that can be dissolved in water? Check all that apply

If 25% of a radioactive element remains after 1,000 years, what is the half-life?

How many valence electrons do the alkaline-earth elements have? a. 1 b. 2 c. 7 d. 8