The answer would certainly be Thallium. This is an facet with Tl together its chemistry symbol and also atomic number 81. This soft gray post-transition stole is no originate free in nature. As soon as inaccessible, thallium look prefer tin, however tarnishes once unprotected come air.

You are watching: Which element is a liquid at 758 k and standard pressure



choice (4) thallium.

Explanation:

1) You need to look at the normal boling and also mleting point out of the elements.

2) to be fluid the normal melting suggest must be reduced than 758 K and the common boiling point must be higher than 758 K.

3) The look in ~ the data in a handbook of properties or in internet, and build a table.

4) The given temperature, 758K, is 758 - 273.15 = 484.85 °C.

Element normal melting common boiling State at 484.85 °C

suggest (°C) suggest (°C)

(1) yellow 1064 2700 hard

(2) silver 961.8 2162 solid

(3) platinum 1768 3825 solid

Then, the only facet of the choices whose melting suggest is much less than 758 K (484.85) and also its boiling point is greater than that, at 1 atm is thallium. So, it is liquid.



Answer from: laneake96
The price is thallium great luck
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