How common is bismuth in the universe compared with silicon?

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A labeled periodic table element box for bismuth shows atomic number 83, symbol Bi, atomic weight 208.9804, electron configuration, and properties including solid state, rhombohedral crystal structure, and weakly acidic oxides. — bismuth Properties of bismuth.

Bismuth is significantly less common in the universe than silicon. Its cosmic abundance is estimated to be approximately one atom for every 7,000,000 atoms of silicon.1

While silicon is one of the most abundant elements in the universe—exceeded only by hydrogen, helium, oxygen, neon, nitrogen, and carbon—bismuth is considered the least abundant of the elements in the nitrogen group.12