The atomic mass of Boron (B) is 11 but to be more accurate, the atomic mass is 10.81.
Given : Atomic mass of B = 10.01 amu , % = 19.9 let it be A Atomic mass of B = 11.01 amu , % = 80.1 Solution : A and B are approximately in the ratio 1:4. Isotopic mass = [(proportion of A X at. mass of A) + (proportion of B X at. mass of B)] / 4 = [(1 X 10.01) + (4 X 11.01)] / 4 = (10.01 + 44.04) / 4 = 54.05 / 4 Isotopic atomic mass = 13.512 amu ---- Therefore, isotopic atomic mass of B is = 13.512 amu.
a. atomic #: -2, Mass #: -4 b. atomic #: +1, Mass #: no change c. atomic #: -1, mass #: no change d. atomic #: -1, mass #: no change
(mass of A) x (%of A) + (mass of B) x (% of B) + (mass of C) x (% of C)
Atomic mass is simply the sum of the number of protons and the number of neutrons. If an atom has "A" protons and "B" neutrons, its atomic mass is A + B.
Atomic mass number of boron(B) - 11
Boron - B - Group IIIThe atomic number is 5.The mass number is 11.
The elements are classified as metalloids. The elements that border it are: B= Boron Atomic # 5 Atomic Mass 11 Si= Silicon Atomic # 14 Atomic Mass 28 As= Arsenic Atomic # 33 Atomic Mass 75 Te= Tellurium Atomic # 52 Atomic Mass 128 At= Astatine Atomic # 85 Atomic Mass 210
If Element B Has 9 As The Atomic Number And 19 As The Mass Number What is The Answer how many protons does it have?
11 B 511 is the atomic mass, B is the atomic symbol and 5 is the atomic number.
Atomic weight: the atomic weight of an chemical element, in atomic mass units or gram atomic mass Atomic mass: the atomic mass of an isotope, in atomic mass units or gram atomic mass Molecular mass: the mass of a molecule, in atomic mass units or gram molecular mass
The general formula for calculation is:Atomic weight = (atomic mass of the isotope a X fraction of the isotope a) + (atomic mass of the isotope b X fraction of the isotope b) + .......(atomic mass of the isotope n X fraction of the isotope n)Don't confuse atomic weight with atomic mass, mass number or atomic number.For carbon:Atomic weight = (12 x 0,9893) + (13,0033548378 x 0,0107) = 12,0107After IUPAC tables from 2009 the atomic weight of carbon is writed as[12,0096; 12,0116].
Atomic no.=no. of protons Atomic mass=no. of protons+no. of neutrons Hence, atomic mass is greater
The atomic mass is the mass of a molecule, atomic particle or sub-atomic particle.
atomic number is a number atomic mass is a mass
Boron- B Atomic Number- 5 Atomic Mass- 10.811
The atomic mass unit is used to express the measure of the atomic mass.
Atomic mass is the sum of the mass of all particles found in an atom. All particles (protons, neutrons and electrons) have a certain mass, and adding it together will give you the atomic mass of that particular element. Therefore, most of the atomic mass is found in the nucleus of the atom, because: A. There are many more protons and neutrons than electrons in most atoms B. Protons and neutrons have a much greater atomic mass that electrons.
== The equation of atomic mass is protons+nuetrons== atomic mass. ===
Cobalt is an atomic mass of 58.93 atomic mass units
The atomic mass is the same as the atomic weight therefore it is 9.01218. Beryllium is a non metal element. Atomic mass of it is 9.01. The atomic mass number, which is distinct from the atomic mass and the atomic weight, is 9.