Xenon
Melting point is -111.9 °C (161.25 K, -169.42 °F)
Boiling point is -108.1 °C (165.05 K, -162.58 °F)
it has 54 protons and electrons and 77 neutrons and is a noble gas =)
A mass number is the sum of numbers of protons and neutrons in an atom. Therefore, an element with a mass number of 65 and 36 neutrons contains (65 - 36) or 29 protons and is therefore an atom of copper.
This electron configuration is for osmium (Os).
The element with an atomic number of 100 is Fermium (Fm), which does not have any stable isotopes. Fermium is a synthetic element that is produced in nuclear reactors and has only radioactive isotopes. Stable isotopes have a balance of protons and neutrons that result in a nucleus that does not undergo radioactive decay.
Barium, or Ba, has an atomic number of 56, which means it has 56 protons and 56 electrons (if it is neutral). Its atomic weight is 137.33, which means it has a total of 137.33 neutrons AND protons put together. It has 81 neutrons (137 minus 56).
There are four protons. Also four neutrons and four electrons
Element 56 on the periodic table is Barium (Ba).
56
They are both Isotopes of Barium. The 56 protons tell us that the element is Barium and when you add the neutrons with the protons you get barium138 and barium134. They are both stable isotobes of barium but of all the barium in the world about 72% is barium138 and 2% is barium134.
Iron is a meta element. Atomic mass of it is 56.
There are four protons. Also four neutrons and four electrons
Barium (Ba) has 56 protons. Barium is an alkaline earth metal.
Iron (Fe) has At No 26 and At Wt 55.85. Is that close enough to 56 for your question.
This element is caesium (Cs), with the atomic number 56.
the answer is 28
Barium has 56 protons.
Barium. Atomic number 56 The reason for this is because Barium has 56 protons and the protons determin the atomic number (56).Also, that would be the same number of electrons. I hope this helped you :]
Iron is a metal element. Atomic mass of it is 56.