A dissociation reaction occurs.lets say pcl5=pcl3+cl2
The example of Iodine and tellurium where iodine which had lesser atomic mass was placed before tellurium proved that order of the Periodic table based on atomic mass was not always correct.
<h3>Why did Mendeleev swap Iodine and tellurium in his Periodic Table so that they were not in order of atomic weight?</h3>
The periodic table as designed by Mendeleev was arranged such that the elements were arranged in order of increasing atomic mass.
However, in this case of tellurium and iodine, Mendeleev placed tellurium before iodine even though it had a greater atomic mass than iodine. This was because Mendeleev observed that elements with similar chemical properties were occurring in a regular pattern in the periodic table and iodine has similar chemical properties to bromine and chlorine before it.
Therefore, the case of Iodine and tellurium proved that arranging elements in the periodic table in order of increasing atomic mass was not always correct.
Learn more about Mendeleev periodic table at: brainly.com/question/2165846
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Answer:
Electrons are found in the periphery of the atom and have a charge of -1. They are much smaller than protons; their mass is
1
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amu. Typically in modeling atoms, protons and neutrons are regarded as stationary, while electrons move about in the space outside the nucleus like a cloud. The negatively charged electronic cloud indicates the regions of the space where electrons are likely to be found. The electrons cloud patterns are extremely complex and is of no importance to the discussion of electric charge in the atom. More important is the fact that electrons are labile; that is, they can be transferred from one atom to the next. It is through electronic transfer that atoms become charged.
Answer:
It sounds like they are studying French phonemes
Explanations:
I just learned this.
T<span>he name of the compound that goes with the chemical formula of MgCl2 is D. magnesium chloride.
Mg is magnesium, and Cl is chlorine, and when it has 2 atoms, it become chloride.
Fluorite is F2, which is why A is incorrect, and B and C are incorrect because manganese is Mn, and molybdenum is Mo.
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