Clearly underline the number of significant figures/digits in each of the following: a). 6.0200000000000000000000 u
b). 10.01003 mm
c). 306,000 kg
d). 0.200005 mg
e). 0.00520 mL

tracks, burrows, eggshells, nests, tooth marks, or gastroliths

the correct option is c.

isotopes refers to different forms of the same element with the same atomic number but different mass number as a result of difference in their neutron numbers. isotopes have different relative atomic mass but share the same chemical properties.

answer; 4 electrons;

plasma - state of matter made up of electrically charged particles