No, Dmitri Mendeleev did not know about protons. The concept of protons was not discovered until later in the 20th century, after Mendeleev's time. Mendeleev is most famous for creating the Periodic Table of elements.
Only some elements were discovered during the life of Mendeleev.
Sodium does.
Electrons, Neutrons, and Protrons
82 protons
No, helium was not included in Mendeleev's original periodic table. It was discovered in 1868, a year after Mendeleev's table was published in 1869.
there are six protrons
All I know is that Mercury has 80 protons.
protrons are a charge of the same strength but oppisite parlaritys +1
Only some elements were discovered during the life of Mendeleev.
Zinc has 30 protrons, 36 neutrons, and 66 electrons
Mendeleev arranged the elements in order of increasing related Atomic Mass
Mendeleev laid the foundation for theperiodictable that we know today
positive
1 amu
The Nucleus.
there are 12
57