What is the number of protons&neutrons in helium?

Answer Helium has the atomic number two, which means it has two protons. It also has two neutrons. Its atomic weight is four--the sum of the protons and neutrons. Helium is the second most abundant elemen... Read More »

Top Q&A For: What is the number of protons&neutrons in helium

How many protons, neutrons&electrons does helium have?

Helium has two protons, three neutrons and three electrons, according to Dixie State College. Protons always equal an atom's atomic number. To find neutrons, subtract the number of protons from the... Read More »

How many neutrons are in niobium?

One atom of niobium contains 52 neutrons, as well as 41 electrons and 41 protons. The atomic number for niobium is 41, and the element appears as "Nb" on the Periodic Table.References:ChemicalEleme... Read More »

How many neutrons does argon have?

Argon is the atom with the symbol Ar on the periodic table. It is one of the noble gases of the periodic table. Its atomic number is 40, and it has 22 Chemistry: Ele... Read More »

How many protons& neutrons are in 121-Te?

Tellurium-121, or 121-Te, has 52 protons and 69 neutrons. It is a radioactive isotope with a half-life of about sixteen days. It is one of 48 tellurium isotopes, only eight of which are considered ... Read More »