Na 2
ОО
20 points
What contains the protons and neutrons of an atom and also has most of the mass of an atom?
atomic number
electron cloud
nucleus
the period
3
20 points
An electron
has a positive charge, is inside the nucleus and has almost no mass.
has a neutral charge, is outside the nucleus and has a mass of lau.

According to periodic trend, which of the following most likely has the highest ionization energy? kr be ni sc

Listenbase your answer to the question on the information below.nuclear radiation is harmful to living cells, particularly to fast-growing cells, such as cancer cells and blood cells. an external beam of the radiation emitted from a radioisotope can be directed on a small area of a person to destroy cancer cells within the body.cobalt-60 is an artificially produced radioisotope that emits gamma rays and beta particles. one hospital keeps a 100.0-gram sample of cobalt-60 in an appropriate, secure storage container for future cancer treatment.which choice represents the correct product for the beta decay of the co-60? fe-60ni-60fe-61ni-61

Glucose (c6h12o6) is an important biological molecule. (round the answer to nearest hundredth.) what is the percent by mass of carbon in glucose?