Radioisotopes emit radioactive particles as they decay, which is one of the reasons why they are used to study metabolic processes in living systems
Which of the following is another advantage of using radioisotopes?
OA Radioisotope analyses can be performed without significantly ahering systems.
OB Radioisotopes behave almost identically to their stable forms in metabolic processes
OC Radioisotopes are easily detected even in very small quantities.
OD
all of these

"among the transition metal elements, manganese and zinc have a slight lowering of electronegativities. the reason behind this is that the nuclear charges of these elements are slightly weaker than the other transition metal elements due to the way their valence electrons are filled up. both manganese and zinc have their valence electrons filled up to the 4th shell with 1 pair of electrons (4s2) completely occupying it. although the electrons in the 3rd shell (3d) are yet to be paired since the outer most shell is filled up, the ability of the nucleus to attract electrons is lessened. hence,   the electronegativity (or the ability to attract electrons) is lessened."

i just calculated it all out, and not including weekends, and all the different days off. as of this school year (2018-2019) students are spending 2198 hours in school this year

the ratio of the conjugate base to the acid required to attain the desired ph.