Question

A) Which elements are in the same row ? B) Which elements have the same column? C)Which elements are in the 18th column?​

Answer 1

Answer:

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Answer 2

Answer:

A.all elements in a row have the same number of electron cells.

B.all elements in the same column as boron have the same number of valence electrons.

C.The elements are helium,neon,argon,Krypton,xenon,radon,and oganesson