This is how osmium appears in the periodic table. A purple box has O s at the center and 76 above. Below it says osmium and below that 190.23. Rounded to the nearest whole number, how many neutrons, on average, are in an atom of osmium?

76
114
190
266

Drag each label to the correct location on the chart. classify each reaction as endothermic or exothermic.

How many neutrons does an element have if its atomic number is 50 and its mass number is 166

The comparison of the number of atoms in a copper coin the size of a penny with the number of people on earth is made to illustrate which of the following? a. that atoms are indivisible b. that atoms are very small c. that atoms are very large d. that in a copper penny, there is one atom for every person on earth