All of the post-iron elements<span> are </span>formed<span> in supernova explosions themselves. So much energy is released during a supernova explosion that the freed energy and copious free neutrons streaming from the collapsing core drive massive fusion reactions, long past the formation of </span>iron<span>.</span>
From Graham's law of diffusion the effusion rate of a gas is inversely proportional to the square root of its molar mass.
Therefore for helium and radon; Helium has a mass of 4 g while randon has 222, hence;
= √222/√4
= 14.90/2
= 7.45
Thus the ratio of effusion rate between helium and randon is 7.45
Answer:
Metals and non-metals are substances that can be differentiated on the basis of various physical and chemical properties. Metals are the elements that are generally hard as strong metallic bond exists between the atoms. As against non-metals are the elements which are usually soft.
Answer:
A. electrons must be parts of the atoms of all elements
The reactants are A: Carbon Dioxide and water