0.088 mol chlorine atoms combined with 0.22 mol oxygen atoms

This is the SI unit of amount of substance. One mole is the amount of a system that contains as many elementary entities (atoms, molecules, ions, electrons, etc.,) as there are atoms in 0.012 kg of carbon-1..

Conditions for the Combination of Atomic Orbitals - Molecular orbitals are formed by the combination of atomic orbitals. But all types of orbitals cannot combine with each other. The following are the main conditions for effective combination..

The combining atomic orbitals should not differ much in energies. For e.g., in case of homonuclear diatomic molecules of the type A 2 ' 2s-orbital of one atom can combine with 2s-orbital of another atom but 1s-orb..

Like 1s-orbitals, 2s-orbitals combine by addition and subtraction of overlappingwavefunctions to form bonding and antibonding molecular orbitals. These are labeled as s 2s,and s *2s. These molecular orbitals have exactly the same shapes as s 1s and s *1s..

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..

The smaller the size of the bonded atoms, the stronger is the bond and larger is the value of bond dissociation energy. For example, the bond dissociation energy of H-H bond in hydrogen molecules is 433 kJ mol - 1 . This is larger than the bond dissociation energy of Cl-Cl in ..

Formation of Molecule Atoms of most of the elements do not exist independently. They either form molecules or ions. An atom having a charge on it is called an ion. When an atom loses or gains charge, it gets converted into a positively or negatively charged ion res..

Listed below are some elements that attain the octet configuration of Noble gases. Let us see how this happens. Study the given table: Elements Atomic number Electronic configuration Loss/gain of e Sodium 11 281 1 electron lost Oxygen S 16 2 elect..

>The mass of electrons is negligible compared to the mass of the protons. Ordinary hydrogen is the only element that has no neutron in it. According to Bohr electrons revolve around the nucleus in fixed orbits called K, L, M, N etc. The energy of the shells increases as the distance form the nucleu..

Oxygen Molecule (O 2 ) - Therefore, oxygen molecule has 16 electrons. In the formation of molecular orbitals, the electrons in the inner shells are expressed as KK denoting ( s 1s) 2 ( s *1s) 2 .The remaining 12 electrons are filled in mol..