The atomic number of boron is 5, one less than the atomic number of the atom in the block to its immediate right.
sodium is the element
The atomic number of Boron is 5.
There are 5 neutron in b-10, and 6 in boron-11
5 Protons,6 Electrons,5 Neutrons
Boron is a chemical element with symbol BIts atomic number is 5.It is a pure solid at room temperatureIts melting point is above 2000 degrees centigrades
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Boron.
The atomic number of boron (number of protons) is 5, just before carbon which is 6.
What is the fift element of the peroidic table
sodium is the element
what is the boron number in an atomic number/
It's an average number allowing for the relative abundances of different isotopes.
The atomic number for boron is 5. This means it is the fifth element in the periodic table after hydrogen helium lithium and beryllium. It is not connected with the film 'The Fifth element' starring Bruce Willis.
For starters they are both isotopes of Boron. The boron in the periodic table has an atomic weight of 10.8, which is basically the average of all of boron's isotopes' atomic weights.An isotope is an atom of an element with the same number of protons, but a different numberof neutrons.This means that the atomic number (proton number: in boron's case this is 5) is the same (which is good, as it's the number of protons which determines what element is which), but the mass number will be different.For example. Carbon 12 has 6 protons, 6 neutronsand 6 electrons. A well known isotope of Carbon 12 is Carbon 14. Note that the number is always the mass number. This means that in Carbon 14, there are still 6 protons and 6 electrons (we know this as it is still carbon; hence still has 6 protons, and is still neutral; hence still has 6 electrons), but there are 8 neutrons.So the difference between boron 10 and boron 11 is that boron 10 has one less neutron than boron 11, or, equally, boron 11 has one more neutron than boron 10.This means that they will have the same chemical properties (will react the same), but will have different physical properties (eg. Boron 11 will be slightly heavier than boron 10).
The metal is aluminum, atomic number 13, under boron in the III-A column of the Periodic Table.