What are localized symptoms?
What are localized symptoms?
Local symptoms are physiological or structural changes within a limited area of host tissue, such as leaf spots, galls, and cankers.
What’s the opposite of localized?
What is the opposite of localized?
| free | generalisedUK |
|---|---|
| generalizedUS | unbounded |
| unconfined | unlimited |
| unrestricted |
What does Unlocalized mean?
: lacking a specific location : not localized an unlocalized setting.
What is a synonym for widespread?
SYNONYMS FOR widespread 2 far-reaching, extensive, pervasive, far-flung.
What is the opposite of localized pain?
Somatic pain is often localized to a particular area. The second form of somatic pain is known as deep somatic pain. Deep somatic pain occurs when stimuli activate pain receptors deeper in the body including tendons, joints, bones, and muscles.
What does poorly localized pain mean?
Deep somatic pain is initiated by stimulation of nociceptors in ligaments, tendons, bones, blood vessels, fasciae and muscles, and is dull, aching, poorly localized pain. Referred pain is characterized by pain felt in a location away from the site of the painful stimulus.
What is a Localised pain?
Localised neuropathic pain (LNP) can be described by patients as ‘shooting pain’, ‘burning pain’, ‘stabbing pain’, or feeling ‘pins and needles’ 3. LNP patients often have very sensitive skin, and state that normally unpainful stimuli such as light touches or clothing are often painful. This is called allodynia.
What does localized mean in physics?
A localized state of a particle or a field means the same thing as in semi-colloquial context: it means that most of the energy density (for the case of a field) or most of the probability (particle, quantum mechanics) may be found within a region (e.g. a ball) whose linear size is smaller (or much smaller) than the …
What is a localized function?
Localisation of function is the idea that certain functions (e.g. language, memory, etc.) have certain locations or areas within the brain. This change provided evidence to support the theory of localisation of brain function, as it was believed that the area the iron stake damaged was responsible for personality.
What is localized energy?
II. DEFINITION The localization energy of a given bond in a molecule is defined as the energy required to perturb the molecule so that the bond in question becomes a double bond, i.e. so that two of the ~-e1ectrons are localized in the bond under consideration.
What is localized charge?
[′chärj ‚lō·kə‚līzd ′ī·ən] (organic chemistry) A charged species in which the charge is centered on a single atom.
What is localized charge distribution?
A localized molecular orbital has been found to extend slightly and regularly into regions away from the chemical bond which contains most of its charge cloud. This was made the basis for a method of transferring localized orbitals among similar molecules.
What is the difference between localized and delocalized electrons?
A localized atom is an electron that belongs to a particular atom while a delocalized electron is an electron not associated with any single atom or a single covalent bond.
Are covalent bonds localized?
The localized bonding model (called valence bond theory) assumes that covalent bonds are formed when atomic orbitals overlap and that the strength of a covalent bond is proportional to the amount of overlap.
What is difference between localized and delocalized bond?
The key difference between localised and delocalised chemical bonds is that localised chemical bond is a specific bond or a lone electron pair on a specific atom whereas delocalised chemical bond is a specific bond that is not associated with a single atom or a covalent bond.
What is localized electron model?
and the localized electron bonding model: bonds are formed by a pair of electrons being shared by two atoms. Bonding pairs and lone pairs: since an orbital can hold two electrons we usually talk about electrons in pairs. A lone pair are a pair of electrons that are not being shared.
What is meant by bond pair of electrons?
In the formation of a covalent bond between two atoms, each atom will share one electron. The electrons present in the covalent bond are known as the bond pair of electrons.
How many valence electrons do elements need to be stable?
eight electrons
What elements follow octet?
The octet rule is only applicable to the main group elements. The molecules of the halogens, oxygen, nitrogen, and carbon are known to obey the octet rule. In general, the elements that obey this rule include the s-block elements and the p-block elements (except hydrogen, helium, and lithium).
Which elements can disobey the octet rule?
There are three violations to the octet rule: odd-electron molecules, electron-deficient molecules, and expanded valence shell molecules.
Why is the octet rule true?
Atoms will react to get in the most stable state possible. A complete octet is very stable because all orbitals will be full. This octet can be made up by own electrons and some electrons which are shared. Thus, an atom continues to form bonds until an octet of electrons is made.
What is the octet rule and which elements obey the octet rule?
The octet rule states that atoms tend to form compounds in ways that give them eight valence electrons and thus the electron configuration of a noble gas. An exception to an octet of electrons is in the case of the first noble gas, helium, which only has two valence electrons.
What is the Lewis octet rule?
Lewis formulated the “octet rule” in his cubical atom theory. The octet rule refers to the tendency of atoms to prefer to have eight electrons in the valence shell. When atoms have fewer than eight electrons, they tend to react and form more stable compounds. This is known as octet rule by Lewis.
Is hydrogen an exception to the octet rule?
However, there are many molecules that do not follow the octet rule. In fact we have already covered one, hydrogen, which can only have one bond, or two electrons. There are two types of exceptions, molecules with atoms having less than an octet, or molecules with atoms having more than an octet.