There are equal atoms of 20381Tl and 20581 Tl .Equal atoms of Superscript 203 Subscript; 81 Tl and Superscript 205 Subscript ; 81 Tl. There are___in a sample of thallium because the mass number of thallium, which is 204.38 a mu, is___the mass number of the isotope present in the highest percentage. In a sample of thallium because the mass number of thallium, which is 204.38 amu, is closer to.

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sulfur belongs to group 16 because it can be found in nature whether it is in a free or combined state.

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d.) gravity pulled particles of dust and gas together to form planets.

a  solution  is always transparent, light passes through with no scattering from solute particles which are molecule in size. the  solution  is homogeneous and does not settle out. a colloid is intermediate between asolution  and a  suspension. while asuspension  will separate out a colloid will not.

smooth muscle is composed of involuntary muscles found within the walls of organs and structures such as the esophagus, stomach, intestines, and blood vessels. those muscles push materials like food or blood through organs. unlike skeletal muscle, smooth muscle can never be under your control.