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Q: What subatomic particle was discovered that changed the periodic law?
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What is the invisible negatively changed particle?

There are many subatomic particles with negative charge, but the first negatively charged particle that anyone learns about is the electron. It is only invisible in the sense that humans can not see it because it is so small. It is a perfectly normal subatomic particle and certainly the most common negatively charged particle in the universe.


How has the table changed over time?

New elements have been discovered or synthesized and added to the Periodic Table.


When a atom gets a positive or negative charge which subatomic particle number has changed?

Since, the proton cannot be taken out of the nucleus these changes occur due to addition or removal of electrons.


Has the number of subatomic particles changed?

No, from 80 years.


How will the modern periodic table be disturbed if isotopes of an element are discovered now?

The periodic table would be disturbed only if isotopes of a new element are discovered, because a periodic table is based on order of atomic number, not atomic mass. If new isotopes of a previously known element were discovered, the atomic mass shown in the periodic table might be changed, but this is very unlikely because the atomic masses shown in a periodic table are based on the naturally occurring distribution of isotopes, and any newly discovered isotopes would probably occur only in very small fractions of the total.


In a chemical reaction what subatomic particles are being changed?

the electron


What did dimitri do with the periodic table of elements?

he changed it


How has the periodic tabel chenged through the years?

Additional elements have been discovered and added including the synthetic elements. Some of the previously "synthetic" elements have been discovered to be naturally occurring, and have been changed to reflect this. The Atomic Mass calculations have been improved.


Can elementary charge be changed?

Yes and no. Technically speaking the charge of a subatomic particle such as an electron or proton is always the same, this is why they are called constants. However, the methods that have been employed to determine the actual value of the elementary charge may not be the correct value. This would be due to experimental error, etc.


Has the periodic table changed in the last 75 years?

Yes. The periodic table has not been the same over the last 75 years, as many more elements have been discovered since then. My grandfather has a mouse mat with a periodic table from 20 years ago, and it is now out of date.


What is the term used to describe the dollar amount of a periodic interest changed by financial institutions on credit accounts?

periodic rate


Does the Electron count change with the release of an alpha particle?

The number of electrons is changed.