Want this question answered?
Chlorine does not have atomic mass 5, so it cannot be "the only element that has a 5 atomic mass".
Cobalt has an atomic mass of 58.933195(5) while nickel has an atomic mass of 58.6934(4). Nickel has the lower atomic mass.
Basic arithmetic (5+6) suggests that the atomic mass is eleven.
It boron element. Atomic mass of it is 10.8.
Atomic mass = 11 amu
Chlorine does not have atomic mass 5, so it cannot be "the only element that has a 5 atomic mass".
Atomic Number = 5 Atomic Mass = 10.811
Cobalt has an atomic mass of 58.933195(5) while nickel has an atomic mass of 58.6934(4). Nickel has the lower atomic mass.
The atomic number is the number of Protons The mass number is the number of Protons and Neutrons The number of Electrons always equals the number of Protons Therefore according to the above information the atomic number of the atom is 5 HOWEVER there is NO element with a mass number (atomic mass) of 9 with an atomic number of 5. You question is impossible to answer. Beryllium has an Atomic mass of 9.0122 and an Atomic number of 4 Boron has an Atomic mass of 10.811 and an Atomic number of 5
Atomic Mass = 11 amu
I think your understanding is confused. Atomic No. of '6' indicates the position in the periodic table, the number of protons, and the number of electrons. Atomic Mass is a number ( equal to or greater than atomic no.), which is the the total of protons and neutrons in the nucleus of an atom . So you atomic mass of '5' is incorrect as it is less than '6'. I think you mean 5 neutrons. If so the atomic mass is 6 + 5 = 11 This would be the isotopic element C-11 (Carbon eleven).
Basic arithmetic (5+6) suggests that the atomic mass is eleven.
It boron element. Atomic mass of it is 10.8.
Atomic mass = 11 amu
you can't tell the atomic mass of an atom if either the number of protons or neutrons is missing. But Boron with 5 protons and 6 neutrons has and atomic mass of 11.
8 the atomic number is 5
The Atomic Mass is, basically, the sum of the protons (the "atomic number"), and the number of neutrons.