bromine mass number

We know that the digits of a number, one by one in order from left to right decrease in value rapidly. Let us illustrate it by examples. Mass of a gold ornament is 23.473 g. Round off to (i) two decimal places, (ii) one decimal place. 23.473 g = (2 x 10) + (3 x 1) + The successi..

The sum of the number of protons and neutrons in the nucleus of an atom is called the mass number. It is represented by the letter A. Mass number (A)= Number of protons (p) + number of neutrons (n) From the knowledge of atomic h..

The total number of protons and neutrons present in one atom of an element is known as its mass number. Mass number = number of protons + number of neutrons It can also be said that: Mass number = Atomic ..

Number average molecular mass is obtained by dividing the total molecular mass of the sample by total number of molecules...

Equivalent Mass and Number of Electrons - Equivalent mass is equal to the molecular or atomic mass divided by the number of electrons involved in the reaction per molecule, atom or ion. For example in the reaction, two electrons are needed to produc..

Equivalent mass is equal to the molecular or atomic mass divided by the number of electrons involved in the reaction per molecule, atom or ion. For example in the reaction, two electrons are needed to produce one molecule of hydrogen gas. So, 2 Farada..

The nuclei of atoms is made up of protons and neutrons. These two components of the nucleus are referred to as nucleons. The electrons occupy the space outside the nucleus. Since an atom is electrically neutral, the number of protons in the nucleus is exactly equal to the numbe..

The molecular mass of a substance is the relative mass of its molecule as compared with the mass of a 12 C atom taken as 12-units. It indicates the number of times; one molecule of the substance is heavier than at..

A small amount of the sample is introduced into the mass spectrometer and is bombarded by a stream of high-energy electrons (70 electron volts (eV) or 1600 kcal/mol). When the high-energy electron strikes an organic molecule, it removes a valence electron from the molecule, producing a c..

Relation Between Atomic Number and Atomic Mass - 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 nu..