The answer is most likely that the answer is B. Because Space is a dangerous place in which you need certain things to explore it. If you want to go to to Jupiter, for example you need lots of Oxygen, fuel, a good rocket, willing people and many more things, but there is a way technology can skip all that. the technology we have now is not capable of doing that though.
Yes. Cl has a is more electronegative than the iodide ion and thus attracts electrons more strongly than the iodide ion.
This is mainly due to the fact that chlorine has only 3 shells, compared to iodides 4 shells. This means a greater electrostatic attraction force exists between the chlorine nucleus and the outer electron than iodide and its outer electrons. As a result the Chlorine will be reduced to Cl- and iodide will be oxidised to iodine, as it will have lost its electron to the chlorine.
The equation is
Cl2 + 2I- --> 2Cl- + I2
There is no transfer of energy in the reaction.
protons and electrons are both always the atomic number which is 9 in this case.
For neutrons you subtract the atomic number (9) from the weight of the atom (18.998) some teachers will want you to round to the nearest whole (19). We do this because the number of protons is the atomic number so if you subtract the protons from the whole weight of the atom you would have the electrons and neutrons left. Since electrons weigh so little we don't have to subtract them. Weighing neutrons and electrons would be like weighing an elephant (neutrons) and then putting one marshmallow on the scale (electron).
vaporisation, Freezing, Condensation
