Bromine: -7.2 °C
Selenium: 220.8 °C
Krypton: -157.4 °C
So of the elements listed Kryption has the lowest melting point.
NO. Krypton is one of the inert gases. It has a melting point of 115.79 K, -157.36 °C
−156.6°C
Potassium is the period four element with the lowest mass; its average mass is 39.0983amu.
Krypton melts at -251.25 °F and boils at -244.12 °F
Iodine is a grey solid element that forms a purple gas on heating. :)
To determine why chlorine's melting point (-100.98) is higher than krypton's melting point (-157.2), you must look at the electron configuration of the elements. 36Kr: [Ar]4s23d104p6, and 17Cl: [Ne]3s23p5. There is a trend in the periodic table that states that elements with paired electrons in the electron orbitals will have extremely low melting points (why all noble-gases have low melting points). So since krypton is a noble-gas, it has every electron orbital filled, forming an octet, therefore having a lower melting point. Chlorine, has a 3p5 orbital and therefore not completing the octet, or paired p-orbital, therefore having a higher melting point.
NO. Krypton is one of the inert gases. It has a melting point of 115.79 K, -157.36 °C
The melting point of bromine is -7,2 0C. The melting point of chlorine is -101,5 0C.
Krypton is gas and does not need melting.
Selenium has a melting point (of gray selenium) 217°C and boiling point (gray) 684.9°C.
−156.6°C
Potassium is the period four element with the lowest mass; its average mass is 39.0983amu.
-268.93 Celsius
Krypton melts at -251.25 °F and boils at -244.12 °F
It is 221 deg C.
663.7 is the melting point of selenium.. and its true,, i promise ,, mmmwhhahahaah
Iodine is a grey solid element that forms a purple gas on heating. :)