Which of the following pairs of elements belong to the same group? C and Sn
K and Be
O and F
Mn and Mo

Hello thereone of the following properties was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version. which property fits this description? answer: atomic mass  was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.

Ive had this before. your answer would be d. hope this ya