exceptional value

. They are also known as inner transition elements. Their general electronic configuration is (n-2) f 1 - 1 4 (n-1)d 0 - 1 ns 2 . Ionization potential (I.P) is the energy required to remove the outermost electron from an isolated gaseous atom of an element. Ionization potential increases along the ..

All the elements of this group have ns 2 np 4 configuration in their outermost shell. Therefore, the atoms of these elements try to gain or share two electrons to achieve noble gas configuration. Since oxygen has a very high value of electronegativity, it tends to achieve noble gas..

While studying the periodic table, it will be noticed that with the increase in the atomic number, there is an increase in atomic mass as well (with some exceptions). Usually an element with high atomic number has high atomic mass as well. If you recall from earlier lessons, Atomic number..

While studying the periodic table, it will be noticed that with the increase in the atomic number, there is an increase in atomic mass as well (with some exceptions). Usually an element with high atomic number has high atomic mass as well. If you recall from earlier lessons, Atomic numbe..

>d- Block elements are the elements of group 3, 4, 5, 6, 7, 8, 9, 10, 11 and 12 placed in the middle of the table. They are also known as transition elements. The inner transition or f-Block elements - lanthanides and actinides, are placed in two separate horizontal series at the bottom of the peri..

The combinations of hydrogen with metals, which have low electronegativity values and are electropositive with respect to hydrogen, form ionic hydrides. Elements of group IA (alkali metals), group IIA (alkaline Earth metals with the exception of Be and Mg) and lanthanum form th..

>This means fourth principal energy level consists of four sub-levels 4s, 4p, 4d and 4f. From this, it may be concluded that the number of sub-levels in a principal energy level is equal to the value of n. Thus, there is only one sub-level in first energy level (n=1), two in second (n=2),..

All the elements of this group have ns 2 np 4 configuration in their outermost shell. Therefore, the atoms of these elements try to gain or share two electrons to achieve noble gas configuration. Since oxygen has a very high value of electronegativity, it tends to achieve noble gas config..

In mathematical sense, equilibrium constant is not a constant. It is called constant because at a fixed temperature and pressure, the value of the equilibrium constant for a reaction is constant. The unit of equilibrium constant (K) of a reaction depends upon the number of moles of the r..

. The change in momentum of the molecule is As the linear momentum remains conserved in a collision, the change in momentum of the wall is ------(i) After rebound, this molecule travels towards A 2 with the X- component of velocity equal to -v x . Any collision of the molecule with any other face (..