A functional group is a specific group (moiety) of atoms in a molecule, such that the group is responsible for the characteristic chemical reactivity of the molecule. From: Carbon Composites (Second Edition), 2017 About this pageSet alert Also in subject areas: Chemical Engineering Computer Scien...
题目 A functional group is a chemically reactive atom or group of atoms that imparts characteristic properties to the family of organic compounds containing it. The site of reaction in an organic molecule is often a functional group, a multiple covalent bond, or a polar single bond. An electro...
The smallest constituent of matter is atom. Each atom consist of subatomic particles called electrons, protons and neutrons. Protons and neutrons are present in the nucleus and called nucleons. A group of atoms having same number of protons are called as an element...
9、These atoms are grouped into molecules.这些原子集合成分子。10、A group of individuals can be called a population.个体的集合称为种群。11、Some groups are circulating petitions.一些团体在散发请愿书。12、He is one of the most effective writers of our group.他是我们组的笔杆子之一。...
wherein M is an atom or group of atoms capable of bonding to the central cavity of a phthalocyanine molecule, wherein axial ligands optionally can be attached to M.Jeffrey H. BanningNan-Xing HuJames D. MayoJames M. DuffRoger E. Gaynor...
groups at the chain end(s)—the carbon atom in the carboxyl group is counted as one of the carbon atoms in the parent hydride and the suffix form “-oic acid” (indicating one carboxyl group) or “-dioic acid” (indicating two carboxyl groups) is used with the name of the parent ...
Which pair of atoms form a nonpolar covalent bond? a. N and O b. P and H c. Na and F d. B and O In a covalent bond, a pair of electrons often called the is responsible for holding two atoms together. What are three ways to tell if a compound is either made of ionic ...
ScienceChemistryCHEMISTRY: ATOMS FIRST VOL 1 W/CONNECT Reason behind in the lack of optical activity in the 2- chlorobutane. Concept introduction: Electrophile (negative-charge loving) : A molecule or ion that accepts a pair of electrons to make a new...
any collection or assemblage of persons or things; cluster; aggregation: a group of protesters; a remarkable group of paintings. a number of persons or things ranged or considered together as being related in some way. Also calledradical.Chemistry.two or more atoms specifically arranged, as the...
and 7 of the Periodic Table. The first three elements are called Ir-group (IPGE) and the other four elements (including Au), the Pd-group (PPGE). The distribution of PGE and most otherchalcophile elementsin mafic and ultramafic rocks is controlled predominantly by sulfides. Most of the wo...