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The National Eligibility cum Entrance Test (Undergraduate) or NEET (UG), formerly the All India Pre-Medical Test (AIPMT), is an Indian nationwide entrance examination conducted by the National Testing Agency (NTA) for admission in undergraduate medical programs. [ 2 ] Being a mandatory exam for admission in medical programs, [ 3 ] it is the ...
Stereochemistry, a subdiscipline of chemistry, studies the spatial arrangement of atoms that form the structure of molecules and their manipulation. [1] The study of stereochemistry focuses on the relationships between stereoisomers, which by definition have the same molecular formula and sequence of bonded atoms (constitution), but differ in ...
The Fürst-Plattner rule attributes this regiochemical control to a large preference for the reaction pathway that follows the more stable chair-like transition state (attack at the C1-position) compared to the one proceeding through the unfavored twist boat-like transition state (attack at the C2-position). [2][3] The attack at the C1-position ...
Chemistry is the scientific study of the properties and behavior of matter. [1] It is a physical science within the natural sciences that studies the chemical elements that make up matter and compounds made of atoms, molecules and ions: their composition, structure, properties, behavior and the changes they undergo during reactions with other substances.
Inorganic compounds exhibit a range of bonding properties. Some are ionic compounds, consisting of very simple cations and anions joined by ionic bonding.Examples of salts (which are ionic compounds) are magnesium chloride MgCl 2, which consists of magnesium cations Mg 2+ and chloride anions Cl −; or sodium hydroxide NaOH, which consists of sodium cations Na + and hydroxide anions OH −.
Climatologists now say that the best case scenario — assuming immediate and dramatic emissions curbs — is that planetary surface temperatures will increase by at least 2 degrees Celsius in the coming decades. This may sound like a small uptick, but the implications are profound. Rising temperatures will destroy plant and animal habitats ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 13 October 2024. British X-ray crystallographer (1920–1958) This article is about the chemist. For the Mars rover named after her, see Rosalind Franklin (rover). Rosalind Franklin Franklin with a microscope in 1955 Born Rosalind Elsie Franklin (1920-07-25) 25 July 1920 Notting Hill, London, England ...
The Huffington Post and YouGov asked 124 women why they choose to be childfree. Their motivations ranged from preferring their current lifestyles (64 percent) to prioritizing their careers (9 percent) — a.k.a. fairly universal things that have motivated men not to have children for centuries.