Answer:
They all have 7 valence electrons on it's outer shell.
Explanation:
Mass of an electron =9.1×10−28g
∴ mass of one mole
=9.1×10−28×6.02×1023
=54.78×10−4g
The formula is 71682928282
Answer is: atoms have the greatest kinetic energy in <span>liquid iron (2,000°C).
</span>The average kinetic energy of molecules depends on the temperature.
At high temperature(2,000°C), molecules of iron have greater kinetic energy than molecules of iron at low temperature (1,600°C, 65°C and 25°C)..