We have to determine which of the first 10 elements of the periodic table would be closest in their properties to a yet undiscovered element with atomic number 165.
The first 10 elements of the periodic table are: Hydrogen, helium, lithium, beryllium, boron, carbon, nitrogen, oxygen, fluorine and neon.
The chemical properties of an element can be predicted by the group it is in.
We can write the electron configuration of an element to determine its groups.
From its electronic configuration, predict which of the first 10 elements would be most similar in chemical behavior to the as yet undiscovered element 165.
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What scientific concept do you need to know in order to solve this problem?
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