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No, Mendeleev did not know about protons, neutrons, and electrons. He is best known for creating the Periodic Table of elements based on the properties of the elements without knowledge of the atomic structure. The discovery of protons, neutrons, and electrons came later with the development of atomic theory.
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How many protons neutrons and electrons does selenium-55 have?
Selenium-55 has 34 protons, 21 neutrons, and 34 electrons.
How many neutrons are in iridium?
Indium have:protons = 49neutrons = 66electrons = 49to know how to get the protons, electrons and neutrons:protons = atomic number of the elementelectrons = protons or atomic number of the elementneutrons = mass number-atomic number
How many protons neutrons and electrons does silicon-30 have?
Silicon-30 has 14 protons, 16 neutrons, and 14 electrons.
How many protons electrons and neutrons does Au- 197 have?
Au-197 has 79 protons, 79 electrons, and 118 neutrons. The atomic number of gold (Au) is 79, indicating the number of protons. The isotope Au-197 specifies the atomic mass, which is the sum of protons and neutrons. So, subtracting the atomic number from the atomic mass gives the number of neutrons.
How many protons neutrons electrons does nitrogen-20 have?
Nitrogen-20 has 7 protons, 13 neutrons, and 7 electrons.
What did daltons theory say about protons and electrons?
Nothing,Dolton did not know about Protons,neutrons and electrons
How may electrons neutrons protons are foundin the helium atom?
In a helium atom, there are 2 protons, 2 neutrons, and 2 electrons. This gives helium an atomic number of 2 and a mass number of 4.
How many protons neutrons and electrons are found in phosphorous?
Phosphorus has an atomic no. of 15 and its atomic mass is 31.=we know,atomic no.=number of protons==also, atomic mass=no.of protons+no. of neutrons==this implies, 31=15+no. of neutrons= 31-15=no. of neutrons= 16=no. of neutrons==also,no. of protons=no, of electrons=so, total no. of protons=15total no. of electrons=15total no. of neutrons=16
How many protons neutrons and electrons does selenium-55 have?
Selenium-55 has 34 protons, 21 neutrons, and 34 electrons.
What statement is true about atoms protons neutrons and electrons?
Several come to mind. They are both found in the nucleus of an atom. Protons have a positive charge, while neutrons have no charge. They are nearly the same size, though neutrons are a bit larger. The sum of the protons and neutrons in an isotope of an element is its mass number.
How many neutrons are in iridium?
Indium have:protons = 49neutrons = 66electrons = 49to know how to get the protons, electrons and neutrons:protons = atomic number of the elementelectrons = protons or atomic number of the elementneutrons = mass number-atomic number
How would you calculate the atomic mass of atom without using the periodic table if you know the number of protons electrons and neutrons?
You can calculate the atomic mass by adding the number of protons and neutrons together, since electrons have a negligible mass compared to protons and neutrons. The sum of protons and neutrons will give you the atomic mass of the atom.
How many electrons and neutrons does a carbon have?
6 protons 6 neutrons 6 electrons. If you can use Wikianswers then you should know how to use Google
How do we know what makes up the atom?
An atom contain protons, neutrons and electrons.
How do you find the number of electrons in an atom if you know the number of protons and neutrons?
In a neutral atom, the number of electrons is equal to the number of protons of the nucleus.
How many protons neutrons and electrons does silicon-30 have?
Silicon-30 has 14 protons, 16 neutrons, and 14 electrons.
How do you figure out protons electrons neutrons?
Find the atomic number. That tells you the number of protons and electrons (in a neutral atom). Then find the atomic weight. The number of protons plus the number of neutrons will equal the atomic weight. So if you know the wt. just subtract the number of protons and you will have the number of neutrons.
