Answer:
Henry Moseley
Explanation:
Dmitry Mendeleef and Lothar Meyer proposed a periodic table based on the atomic mass.
They stated a periodic law expressed as "chemical properties of elements are a periodic function of their atomic weights".
But, Henry Moseley in 1900s re-stated periodic law by changing the basis of the law from atomic weight to atomic number.
The present periodic law is stated as "the properties of elements are a periodic function of their atomic number".
Answer: The answer would be D.
Explanation: When a screw is tightened into an object, it is wedge in between.
<span>B. energy
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Location = nucleus ,
and you can see the total charge on the number that written below the substance, which would be 28+
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The answer is 16.75 it rounds to 17 Hope this helps! ;D
