What group of elements were not on the original periodic table

Elements in group 2A(2) 0f the periodic table from ions with a change of, How would I find this out....

In all elements in a group, the thing that is the same is the: a Number of electrons in the va...

In which group of elements does tellurium (Te) belong? (1 point) Responses metalloids la...

can elements from Group 1 and Group 5 react ?

In which group of elements does tellurium (Te) belong? (1 point) Responses metalloids metall...

Which group of elements does an element belong that has seven electrons in its outer shell. It is fa...

Which group of elements has the most similar chemical properties? (1 point) Responses uranium (U), p...

In which group of elements does tellurium (Te) belong? (1 point) Responses alkali metals alk...

Elements in the same group have similar physical and chemical properties because they have the same...

Which group of elements has the most similar chemical properties? (1 point) fluorine (F), chlorine...

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