Boron is an element that is in period 2 on the periodic table and has an atomic mass of 10.81
The closest to 11 is Boron with an Atomic mass of 10.881
Boron. If you have a chemistry reference table it has the atomic mass on the periodic table and you round the mass to the nearest whole number
its atomic massIts atomic number.
Short answer: boron. Long answer: any element with 11 protons or less could theoretically have an atomic mass of 11, as the mass = Number of Protons + Neutrons, if you add/take a certain number of neutrons from the atom it will be able to have an atomic mass of 11, but some aren't possible and others are too unstable, and will decay instantly.
Boron is a non metal element. Atomic mass of it is 11.
Atomic Mass: 23Atomic Number: 11Chemical Symbol: NaElement Name: Sodium
Sodium is a meta element. Atomic mass of it is 23. Atomic number of it is 11.
Boron is a metal element. Atomic mass of it is 11.
Sodium is a meta element. Atomic mass of it is 23. Atomic number of it is 11.
The element with the lowest atomic number in period 3 is sodium (Na) with an atomic number of 11.
Sodium, Na, has the Atomic Number 11, but it is in period 3, not 2.
Boron, which is element no. 5.
Boron is a non metal element. Atomic mass number of it is 11.
Atomic number: 11 Mass number: 23 (11 protons + 12 neutrons) Atomic mass (aka atomic weight): 22.98976928 Element: Sodium (sodium-23 is the only stable sodium isotope)
Subtract the atomic # from the atomic mass. Atomic number = number of Protons. Atomic mass = total nucleons (Protons + Neutrons).Atomic # = 11 and Atomic Mass = 23. So 23-11 = 12 Neutrons.
Boron-11 has atoic mass 11.009305 a.m.u. Carbon-11 has atoic mass 11.011433 a.m.u.
The atomic no is left side down an atomic mass is at upper side, as for sodium 11Na23, 11= atomic no and 23= atomic mass.
An element with 11 protons will have atomic number 11, or sodium. If the element has 11 neutrons, then it has an atomic mass of 11+11 = 22. Therefore, the isotope Sodium-22 has 11 protons, neutrons, and electrons.
Boron is a metal element. Atomic mass of it is 11.
Boron is a non metal element. Atomic mass of it is 11.
Atomic mass numbers are not properties of elements overall, but only of particular isotopes of elements. The only stable element with an isotope with mass number 11 is boron. Beryllium and carbon also have isotopes with mass number 11, but these are radioactive.
11 B 511 is the atomic mass, B is the atomic symbol and 5 is the atomic number.