a new position for roz

Based on the positions in the periodic table, Mendeleev could predict the properties of some undiscovered elements. He left three blanks for elements that were not discovered at that time. He was able to predict the properties of these unknown elements more or less accurately. He named t..

The speed traveled and fuel consumed by the new model of a car manufactured by a company is listed here. Speed (kmph) 30 40 50 60 70 80 90 100 110 120 Fuel (litres/100 kms) 10 8 7 6 6.2 7 7.6 8.3 9 10 Calculate the correlation coefficient between the speed and the fuel consumed and descri..

Sign Conventions and Rules for Drawing Ray Diagrams - These new cartesian sign conventions adopted during measurements are as follow..

Ernest Rutherford, an energetic New Zealander working in England, was studying the properties of particles spontaneously emitted by radioactive substances. Of particular interest was a positively charged, relatively heavy emission named alpha particle. Quantities of such partic..

Probability Picture of Electrons and Concept of Atomic Orbital (Wave Mechanical Treatment) - The wave character of an electron and uncertainty in its position and momentum gave a serious blow to Bohr's model of an atom. According to Bohr, the electrons revolve around the nucleus in certai..

Rene' Descartes' (1596-1665), a French philosopher and mathematician, introduced a method by which the position of a point can be corresponded with an ordered pair of real numbers. These pair of real numbers are called the Coordinates. This method is the new idea of combin..

Rene' Descartes' (1596-1665), a French philosopher and mathematician, introduced a method by which the position of a point can be corresponded with an ordered pair of real numbers. These pair of real numbers are called the Coordinates. This method is the new idea of combining t..

Introduction - Rene' Descartes' (1596-1665), a French philosopher and mathematician, introduced a method by which the position of a point can be corresponded with an ordered pair of real numbers. These pair of real numbers are called the Coordinates. This method is the new idea ..

Introduction - Rene' Descartes' (1596-1665), a French philosopher and mathematician, introduced a method by which the position of a point can be corresponded with an ordered pair of real numbers. These pair of real numbers are called the Coordinates. This method is the new idea ..

Reactions which can be explained on the basis of gain or loss of electrons is called redox reactions. In molecular compounds, the combining capacity i.e. the valency of each combining element determines the chemical formula of the compound. The valency of an electropositive ion and an elect..