Which of the following pairs of elements could possibly be found in the same group on the periodic table?

A is an alkali metal; B forms a 1 - ion.

A has two valence electrons; B forms a 2 - ion.

A is a noble gas; B has seven valence electrons.

A forms a - 3 ion; B has five valence electrons.

Question

Rigoberto Riddle

31 March, 17:03

+5

Answers (1)

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Clare Bradford · Answer 1

A forms a - 3 ion; B has five valence electrons.

Which of the following pairs of elements could possibly be found in the same group on the periodic table?A is an alkali metal; B forms a 1 - ion.A has two valence electrons; B forms a 2 - ion.A is a noble gas; B has seven valence electrons.A forms a - 3 ion; B has five valence electrons.