Describe Bohr's contribution to the atomic model.

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This is how krypton appears in the periodic table. A purple box has K r at the center and 36 above. Below it says krypton and below that 83.80. Rounded to the nearest whole number, how many protons are in an atom of krypton? 36 48 84 120

Which of the following is not a step in the conversion of 25 L to hm3? fraction cubed: one m over ten to the negative second power m one mL over ten to the negative third power L one cubic cm over one mL fraction cubed: one hm over ten to the second

True or False: A theory is something that can never be proven correct or incorrect?

Nonmetals gain electrons under certain conditions to attain a noble-gas electron configuration. how many electrons must be gained by the element c?

What year was the hole in the ozone layer detect in the antarctica?

What are some examples of chemical equations?

Substances with strong intermolecular bonds vaporize _ than those with weaker bonds. faster more easily at the same rate slower

How many dozen kernels of corn are in a 50 pound bag of corn

How does magnesium obey the octet rule when reacting to form compounds

Is heat conductivity a physical or chemical property?