It is the Atomic Number.
Ni is the symbol for Nickel in the Periodic Table.
If you mean 'U' that is Uranium. It has atomic number 92.
B is the symbol for boron which is an element on the periodic table
The symbol on the periodic table means the abrevitation of the chemical element. For example, the chemical element symbol Pm stands for Promethium.
Ho is the symbol for the element holmium (atomic number 67)
At is the symbol for the element "Astatine"
Each square in periodic table contains following: 1. symbol of the element 2. atomic number
N is the symbol for the element, nitrogen
Au is the chemical symbol for gold.
Te is the symbol for the element Tellurium
I'm assuming you mean "how can you find an element on the periodic table?" The periodic table is strategically placed. You can either look for the atomic number (the number at the top-- the number of the protons in one atom), or you can just look for the Element Symbol. The periodic table from left to right is sorted by increasing atomic number. The periodic table from top to bottom is sorted by increasing number of energy levels (the levels in which the electrons are in).
K on the periodic table is Potassium. It has a mass of 39.0983 amu and its atomic number is 19.K is the symbol for potassium.