- inert pair effect
- • ефект на инертната двойка
English-Bulgarian polytechnical dictionary . 2013.
English-Bulgarian polytechnical dictionary . 2013.
Inert pair effect — The term inert pair effect is often used in relation to the increasing stability of oxidation states that are 2 less than the group valency for the heavier elements of groups 13, 14, 15 and 16. The term inert pair was first proposed by Sidgwick… … Wikipedia
nitrogen group element — ▪ chemical elements Introduction any of the chemical elements that constitute Group Va of the periodic table (see Figure >). The group consists of nitrogen (N), phosphorus (P), arsenic (As), antimony (Sb), and bismuth (Bi). The elements share… … Universalium
Bohr model — In atomic physics, the Bohr model created by Niels Bohr depicts the atom as a small, positively charged nucleus surrounded by electrons that travel in circular orbits around the nucleus mdash;similar in structure to the solar system, but with… … Wikipedia
VSEPR theory — Valence shell electron pair repulsion (VSEPR) theory is a model in chemistry used to predict the shape of individual molecules based upon the extent of electron pair electrostatic repulsion.[1] It is also named Gillespie–Nyholm theory after its… … Wikipedia
Magnetochemistry — is concerned with the magnetic properties of chemical compounds. Magnetic properties arise from the spin and orbital angular momentum of the electrons contained in a compound. Compounds are diamagnetic when they contain no unpaired electrons.… … Wikipedia
List of effects — This is a list of names for observable phenonema that contain the word effect, amplified by reference(s) to their respective fields of study. #*3D audio effect (audio effects)A*Accelerator effect (economics) *Accordion effect (physics) (waves)… … Wikipedia
Indium — Not to be confused with Iridium. cadmium ← indium → tin Ga ↑ In ↓ Tl … Wikipedia
Tin(II) bromide — Chembox new Name = Tin(II) bromide ImageFile = Tin(II) bromide.jpg ImageName = Tin(II) bromide OtherNames = tin dibromide, stannous bromide Section1 = Chembox Identifiers CASNo = 10031 24 0 Section2 = Chembox Properties Formula = SnBr2 MolarMass … Wikipedia
Atomic radius — Diagram of a helium atom, showing the electron probability density as shades of gray. The atomic radius of a chemical element is a measure of the size of its atoms, usually the mean or typical distance from the nucleus to the boundary of the… … Wikipedia
D-block contraction — (sometimes called scandide contraction) is a term used in chemistry to describe the effect of having full d orbitals on the period 4 elements. The elements in question are the Ga, Ge, As, Se and Br. Their electronic configurations include… … Wikipedia
d-block contraction — Atomic radius of elements of the groups 2,13 and 14. It shows d block contraction , especially for Ga and Ge d block contraction (sometimes called scandide contraction) is a term used in chemistry to describe the effect of having full d orbitals… … Wikipedia