the importance of valence: when two atoms react, their outer shell first comes into contact and it is, therefore, the outer shell electron that is normally involved in a chemical reaction. the atoms exchange valence electrons in a chemical reaction to stabilize their valence shell. q4 why is ...
1^1H and 1^3H have (a) different chemical properties because they have different atomic numbers. (b) the same chemical properties because they have the same number of valence electrons. (c) different chemical properties b a radioactiv...
S in HS−(aq)? Oxidation Number:The total electrons lost or gained by a chemical species during formation of a molecule is known as oxidation number. The chemical species is reduced if its oxidation number is decreased. The chemical species is oxidised if its oxidation number is increa...
The symbol Z is given to that atomic number, which is also the number of electrons in the atom and determines its chemical properties. Computer Exercise 2.A describes the program ELEMENTS, which helps find atomic numbers, symbols, and names of elements in the periodic table. Generally, the ...
Thenucleus of an atomcontains protons andneutrons. An atom's electrons are found in orbitals around the nucleus. The atomic number definition is based on the number of protons in an atom. Protons are positively charged particles in the nucleus of atoms. Theatomic numberis based solely on the...
Which best describes the relationship of magnesium and phosphorus? Which best describes the relationship of the elements?Magnesium has a larger atomic number.Phosphorus has a larger atomic mass.Magnesium is in the same category as phosphorus.
- Phosphorus has 5 valence electrons, forms 3 bonds with chlorine and 2 bonds with fluorine, and has no lone pairs. - Geometry: Trigonal bipyramidal. - The dipole moments do not cancel out due to the presence of more electronegative fluorine, making PCl₃F₂ polar. - SF₆: - Sulfu...
By combining elements with three and five valence electrons (such as aluminum and phosphorus, respectively)—an average of four electrons per atom—a material with properties similar to silicon with four valence electrons is obtained. However, because the orbitals of phosphorus are lower in energy ...
It states the number of electrons an element shares in an atom. It is also defined as the charge of an ion. The oxidation number is used in REDOX reactions. In those reactions, we determine the oxidation state of each atom to predict if it is going to oxidize or to reduce. ...
Construct Molecular Orbital Diagram and determine unpaired electrons in O2- , O2+ , BN , NO- Write the complete orbital diagram for each of the following elements, using boxes to represent orbitals and arrows to represent electrons. a) aluminium, Z = 13 b) Phosphorus, ...