A pair of elements in the same group are more likely to have similar properties. This is why groups are also called families. In the main group elements, groups 1,2, 13-18, the elements in a group have the same numbers of valence electrons in their outermost energy levels. This accounts for the fact that they behave in a similar matter in chemical reactions.
those in a group because the elements have to same chemical properties.
Usually more likely in the same group, as the elements in a group have the same valence electron count. (e.g. group 14 ; C, Si, Ge, Sn, Pb)
Elements with similar chemical properties are in the same group.
Group
elements in the same group
b
The proper term for the phenomenon of reaction rates is known as chemical kinetics. Generally for any chemical reaction factors such as temperature, concentration, pressure, physical state, presence of a catalyst, and the reaction rate order. Reaction rate order is specific for each chemical reaction. So to sum it all up, if you influence the environment in a manner that does not change one of these listed variables, then it will not likely do anything to a reaction rate. But to be honest, I can't think of a single thing you could do to a reaction that wouldn't influence one or more of these parameters.
The physical and chemical properties of the elements are periodic functions of their atomic numbers.The periodic law states that the physical and chemical properties of elements are periodic functions of their atomic numbers. They influence the characters of an element more than atomic weight.
the man who first arranged the elements according to atomic mass and noticed q periodic recurrence of their physical and chemical properties was Dmitri Mendeleev.
Proteins that speed up the rate of biochemical reactions are called enzymes. These proteins work by lowering the activation energy of a chemical reaction. Typically, this is accomplished by the manner in which the enzyme binds to the substrate.
Double Displacement reaction is a reaction in which reactants react in such a manner that they exchange their radicals. Example: H2SO4 + BaCl2 ----------> 2HCl + BaSO4
The proper term for the phenomenon of reaction rates is known as chemical kinetics. Generally for any chemical reaction factors such as temperature, concentration, pressure, physical state, presence of a catalyst, and the reaction rate order. Reaction rate order is specific for each chemical reaction. So to sum it all up, if you influence the environment in a manner that does not change one of these listed variables, then it will not likely do anything to a reaction rate. But to be honest, I can't think of a single thing you could do to a reaction that wouldn't influence one or more of these parameters.
The physical and chemical properties of the elements are periodic functions of their atomic numbers.The periodic law states that the physical and chemical properties of elements are periodic functions of their atomic numbers. They influence the characters of an element more than atomic weight.
that many of the physical and chemical properties of the elements tend to recur in a systematic manner with increasing atomic number.
the man who first arranged the elements according to atomic mass and noticed q periodic recurrence of their physical and chemical properties was Dmitri Mendeleev.
Lowers the activation energy of a reaction, therefore speeding the reaction up.Catalysts speed up chemical reactions. They do not change the products or reactants of the reaction, and are not used up or consumed in the reaction. Biological catalysts are called enzymes. Catalysts lower the activation energy (or energy needed to start a reaction), and cause the reaction to occur more quickly.
oxygen,carbon,
New compounds can only be created by the union of two or more chemical elements in a fixed ratio, the union being a chemical bond. It is this chemical bond which is unique to every individual compound. It also keeps new compound stable.Bonding occurs commonly in an ionic or covalent manner
Proteins that speed up the rate of biochemical reactions are called enzymes. These proteins work by lowering the activation energy of a chemical reaction. Typically, this is accomplished by the manner in which the enzyme binds to the substrate.
Elements are arranged by their atomic number. The properties are periodic when arranged in this manner.
Double Displacement reaction is a reaction in which reactants react in such a manner that they exchange their radicals. Example: H2SO4 + BaCl2 ----------> 2HCl + BaSO4
All these 92 elements (including also Np and Pu) are considered now natural elements.
Elements in the same group usually have similar, but not the same, reactivity. For example, the noble gases are generally inert, but helium and neon are more inert than argon and krypton, which form a limited number of compounds. Additionally, the alkali metals all react in a similar manner with water, but the reaction of lithium with water is much less vigorous than the reaction of cesium with water.