humbertom467
humbertom467
04.11.2021 • 
Chemistry

Which two elements are ions?

a) Π and Ψ
b) Φ and Ψ
c) Σ and Ω
d) Ψ and Ω


Which two elements are ions? 
a) Π and Ψ 
b) Φ and Ψ 
c) Σ and Ω 
d) Ψ and Ω

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