Potassium is an alkali metal in group IA of the periodic table with atomic number 19, an atomic weight of 39.102, and a density of 0.86 Mg/m 3. Its melting point is 63.7 C, and it boils at 760 C. The ...

The periodic table captures ... Lithium, for example, with an atomic number of 3, is a reactive metal — just like sodium (element number 11) and potassium (number 19). A good way to think ...

The atom with eight protons in its nucleus (atomic number 8) is oxygen. Each energy level holds a ... the next electron goes into the fourth level. 4th Period: Potassium and Calcium—Electrons go into ...

Our bodies require other elements, including non-metal elements such as phosphorus (P), sulphur (S) and chlorine (Cl), and metal elements like potassium ... of the periodic table and are mainly ...

Mendeleev’s work Here is a list of periodic table elements with their names, symbols, atomic numbers, atomic masses, number of electrons and protons in a tabular format: Atomic Number Element ...

For example, lithium (Li), sodium (Na) and potassium (K ... However, the modern periodic table arranges the elements by increasing atomic number, rather than atomic mass. Mendeleev recognised ...

For example, lithium (Li), sodium (Na) and potassium (K ... However, the modern periodic table arranges the elements by increasing atomic number, rather than atomic mass. Mendeleev recognised ...