atomic number

Group --> Period 1A 2A 3A 4A 5A 6A 7A 0 Period 1 1 H 1 2 He 2 Period 2 3 Li 2,1 4 Be 2,2 5 B 2,3 6 C 2,4 7 N 2,5 8 O ..

The numbering of carbon atoms in the ring (or nucleus) is done as follows. When there is only one substituent on the ring, there is only one compound possible. Thus, numbering of the carbon atoms of the nucleus does not arises. If there are two or more su..

The electronegativity depends on the number and nature of atoms bonded to i..

The diameter of a Hydrogen atom is 0.00000001 mm. Express this number in scientific notation. => 1 × 10 -8 mm or 0.1 × 10 -7 mm or 1 × 10 -9 mm or 1 × 10 8 mm..

Atom is the smallest particle of an element, which may or may not have independent existence. It is made up of subatomic particles like electrons, protons and neutrons. Atoms of one type of element differ from those of the other due to different number of subatomic pa..

The diameter of an atom is 0.0000000125 cm. Which one of the following shows this number in scientific notation? => 12.5 × 10 - 8 cm or 1.25 × 10 - 10 cm or 1.25 × 10 - 8 cm or 125 × 10 - 8 cm..

The diameter of an atom is 0.0000000125 cm. Which one of the following shows this number in scientific notation? => 12.5 × 10 - 8 cm or 1.25 × 10 - 10 cm or 1.25 × 10 - 8 cm or 125 × 10 - 8 cm..

Atomic Size and Atomic Radius - The distance from the centre of the nucleus to the outermost shell of an atom is called the atomic radius of that atom (Fig. 2.1..

Atomic Number, Mass Number or Nucleon Number - The nuclei of atoms are 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 e..

Atoms and Molecules - The smallest particle of an element, which may or may not have independent existence is called an atom, while the smallest particle of a substance which is capable of independent existence is called a molecule. Molecules are classified as homoatomic and het..