Calcium is a non metal element. There are 20 electrons in a single atom.
Nonmetals attract electrons.
I believe 4s2 is the distinguishing (last) electron
A non-metal element needs to gain one or more electrons to form an anion. This allows the non-metal to achieve a stable electron configuration, usually by filling its valence shell. The addition of electrons gives the non-metal a negative charge, turning it into an anion.
Metalloids typically have 3 to 6 valence electrons. This intermediate number of valence electrons allows metalloids to exhibit both metal and non-metal characteristics.
Calcium is a non metal element. There are 20 electrons in a single atom.
Nonmetals attract electrons.
The element you are describing is oxygen. It has 6 valence electrons and 2 energy levels, placing it in group 16 of the periodic table as a nonmetal.
Atoms can complete their set of valence electrons by either taking some from another element (ionic bond), or by sharing valence electrons with another element (covalent bond). An ionic bond is usually between a non-metal and a metal, and a covalent bond is usually between two non-metals.
I believe 4s2 is the distinguishing (last) electron
A non-metal element needs to gain one or more electrons to form an anion. This allows the non-metal to achieve a stable electron configuration, usually by filling its valence shell. The addition of electrons gives the non-metal a negative charge, turning it into an anion.
Metalloids typically have 3 to 6 valence electrons. This intermediate number of valence electrons allows metalloids to exhibit both metal and non-metal characteristics.
Selenium (Se) is a solid non-metal element (#34). It has two valence electrons, meaning that it reacts similarly to sulfur and oxygen.
Selenium (Se) is a solid non-metal element (#34). It has two valence electrons, meaning that it reacts similarly to sulfur and oxygen.
Valence electrons and group number for metal are same. For non-metals, valence electrons are equal to group number-10.
Oxygen is a non metal element. There are 8 electrons in a single atom.
Magnersium is a non metal element. There are 12 electrons in a single atom.