Atomic number is the number of protons in an atom. It is used to identify a particular element. Electrons have a mass number of 0 and an atomic number of -1. Protons have a mass number of 1 and an atomic number of 1. Neutrons have a mass number of 1 and an atomic number …
The mass number, also known as the atomic mass number, is the total number of protons and neutrons in the nucleus of an atom. It is represented by the symbol A, and is equal to the number of protons, Z, plus the number of neutrons, N. A = Z + N.
Electrons orbit the nucleus of an atom in specific, discrete energy levels. When electrons jump from a higher energy level to a lower energy level, they release energy in the form of photons. Electrons can only exist in certain, discrete energy levels and cannot have any energy in between. The electrons are held in their …
Main ideas of the Bohr model – ബോർ മോഡലിന്റെ പ്രധാന ആശയങ്ങൾ Read More »
Bohr’s model of the atom is a simple representation of the structure of atoms. It was proposed in 1913 by Danish physicist Niels Bohr. The model proposed that electrons move in discrete orbits around a fixed, positively charged nucleus. The orbits are called energy levels and each has a specific energy associated with it. The …
Rutherford’s planetary model of the atom is a model of the atom proposed by physicist Ernest Rutherford in 1911. According to the model, the atom consists of a small, positively charged nucleus surrounded by electrons which are distributed in a series of shells or orbits around the nucleus. The electrons are held in their orbits …
Rutherford’s planetary model of atom – റൂഥർഫോർഡിന്റെ സൗരയൂഥമാതൃക Read More »
Yes, an atom is electrically neutral. This is because the number of protons, which have a positive charge, is equal to the number of electrons, which have a negative charge. Therefore, the overall net charge of the atom is zero.
James Chadwick’s experiment was conducted in 1932 to determine the mass of the neutron. He bombarded beryllium with alpha particles (the nuclei of helium atoms) and detected the presence of radiation that had a mass of about one-third of the mass of a hydrogen atom. This radiation was identified as a neutral particle, which he …
James Chadwick (1891-1974) Experiments and Findings – ജെയിംസ് ചാഡ്വിക്ക് (1891-1974) Read More »
Ernest Rutherford is best known for his gold foil experiment, which was conducted in 1909. The experiment was designed to study the structure of the atom. Rutherford and his team bombarded a thin sheet of gold foil with alpha particles, a type of radiation. The team expected the particles to pass through the foil and …
Ernest Rutherford (1871-1937) Experiments and Findings – ഏണസ്റ്റ് റഥർഫോർഡ് (1871-1937) Read More »
Joseph John Thomson was an English physicist and Nobel laureate in physics, credited with the discovery of the electron and the invention of the mass spectrometer. He was awarded the 1906 Nobel Prize in Physics for his work on the conduction of electricity in gases. Thomson’s model of the atom, proposed in 1897, proposed that …
JJ Thomson (1856-1940) – ജെജെ തോംസൺ (1856-1940) – Experiments and Findings Read More »
Wilhelm Roentgen was a German physicist who is best known for his discovery of x-rays in 1895. This discovery revolutionized the field of medical diagnosis and led to the development of medical imaging technologies such as CT scans and MRIs. He also studied cathode rays, which laid the groundwork for the development of television. He …
Wilhelm Roentgen (1845-1923) experiments and Findings – വിൽഹെം റോണ്ട്ജെൻ (1845-1923) Read More »