The answer indicates that bismuth and nitrogen are both in the same period.
Gas nitrogen (N), a nonmetallic element belonging to Periodic Table Group 15 [Va]. It is a colorless, flavorless, and unscented gas that makes up the majority of the air on Earth and is a component of all living organisms.
At air pressure, liquid nitrogen has a boiling temperature of -196°C. Direct freezing of the skin can result in cold burn and frost. Even a brief exposure to the cold gas alone, which would not be long enough to effect skin, might harm delicate tissue like the eyes.
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