Which of these elements exist as a liquid at normal earth temperatures? select all that apply. bromine sodium oxygen mercury

Explanation:

Normal Earth temperature means the standard temperature and pressure conditions. At STP, temperature is 273 K or zero degree celsius and pressure is 1 atm.

For gases at STP, volume is equal to 22.4 liter.

So, at normal Earth temperature sodium exists as a solid whereas oxygen exists as a gas.

On the other hand, both bromine and mercury exists as liquid at normal Earth temperature.

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> they are both natural and not man made

> they can be tracked and predicted by the right tools

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