Answer to: How can someone tell how stable or unstable an element is if all we know is where that element is placed on the periodic table? By...
Atomic mass:The standard atomic weight of an element is the average mass of the element written in atomic mass units (amu). Even though each atom has roughly a whole number of atomic mass units, you will notice that the atomic mass on the periodic table is a decimal; that's because the...
An electron is a negatively charged subatomic particle that orbits the nucleus of an atom. The nucleus consists of positively charged protons and neutrally charged neutrons. The number of protons in the nucleus defines the atomic number of an element, and the number of electrons in a neutral at...
How do you know if an element is monovalent or divalent? The terms monovalent and divalent are adjectives that describe the valency of an atom. The key difference between monovalent and divalent is that monovalent elementscan remove or gain one electron in order to become stable, whereas divalent...
What is the average atomic mass of Element X if 51.83% of Element X occurring in nature has a mass of 106.905 amu and 48.17% of the atoms have a mass of 108.905 amu? How does an atom try to fill its valence shell? If you know the atomic number and the mass number of an isotope...
A simplistic model of an atom, known as the Rutherford–Bohr model, Bohr model or Bohr diagram has a central nucleus made up of particles called protons and neutrons. The nucleus is surrounded by orbitals containing electrons. In some materials such as metals, electrons are bound loosely to ...
To determine the valence electrons in an atom, you write the electron configuration of the element in noble-gas-inner-core form. The electrons outside... Learn more about this topic: Valence Electron | Definition, Configuration & Examples ...
The atomic number is the number of protons an element has. The atomic number increases by one as we move one element to the right. That is to say, if an element has an atomic number of 25, the element directly on its right will have the atomic number 26. When we reach the end of...
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introduced.The period to which an element belongs to represents the outermost shell of the element...