Phosphorus is the element among the elements given in the question that if <span>combined with chlorine, will have the greatest attraction for the chlorine electrons. The correct option among all the options given in the question is the second option or option "b" and the fact is that you have chosen correctly. </span>
<u>Answer:</u> The element E is Krypton (Kr).
<u>Explanation:</u>
In a nuclear reaction, the total mass and total atomic number remains the same.
The given nuclear reaction follows:

Total mass on reactant side = total mass on product side
75 = A + 0
A = 75
Total atomic number on reactant side = total atomic number on product side
35 = Z + (-1)
Z = 36
The isotopic symbol of element E is 
Hence, the element E is Krypton (Kr).
a core of protons and neutrons surrounds by electrons
Answer:
The reasons why the seemingly floating bubbles disappear was that they tend to loss their latent heat to the water molecules at the surface water.
Explanation:
Heat energy has a considerable effect on the velocity of molecules including water. The water molecules below the container will receive much more heat energy than those above it. This heat energy in the form of specific heat capacity and latent heat that result in the increase in the speed of individual molecules of water and finally to the escape of the molecules to a colder region of the container, in this case the upper region. At the collision of the bottom water to the surface water, they tend to exchange their heat content, the hotter molecules will lose their heat to the cold ones. When the formerly hot molecules encounter this, it will result in lowering the temperature and consequentially to the reduction of their movement, once in the form of bubble, now become ordinary water. This convectional transfer of heat energy will continue until the whole system has a uniform temperature depending on the consistency of the heat source.