Is Sweden a triad or non-triad country?

TRIAD is a cluster of countries which account for over 50% of the world GDP (Gross Domestic Product) while only accounting for 8% of the world's population. The GNI (Gross National Income) of the...

working as pimps through the night

If by primary, you mean major, then: Fifth: D Third: B Root: G

A three noted chord (apex)

A triad has three elements from the periodic table that have something incommon weather the number of valence atoms or the number of protons and electrons.