Characterize element number 3 lithium, by its location in the periodic system of Mendeleev
| December 3, 2020 | education
Li (Lithium) – No. 3, I group A, 3rd period, 3rd row, nucleus charge +3
Protons: +3
Number of electrons: -3
Number of neutrons: 7-3 = 4
The number of neutrons is calculated by the formula:
Relative atomic mass – ordinal = number of neutrons
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.
