the solubility product of baso4 is 1.5 into 10 to the power minus 9 at 25 degree Celsius its solubility is 0.1 M bacl2 solution at the temperature is

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.

answer by yourhope:

how do models compare to real-world objects?

d. most models represent a real-world object in a simpler way.

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it is the most commonly accepted one