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Atoms and Molecules
Atoms and Molecules - 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 po..
Atoms and Ions
: Na, Mg, K, Ca g lose electrons S, O, F, Cl g gain electrons Most of these atoms try to attain the configurations of either neon (2,8) or argon (2,8,8). By the loss or gain of electrons a neutral atom is changed to an ion . Ions are charged atoms or a group of at..
: Na, Mg, K, Ca g lose electrons S, O, F, Cl g gain electrons Most of these atoms try to attain the configurations of either neon (2,8) or argon (2,8,8). By the loss or gain of electrons a neutral atom is changed to an ion . Ions are charged atoms or a group of at..Size of the bonded atoms
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 t..
Molecular Orbitals Due to Atomic Orbitals
Combination of 2s atomic orbitals - 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 sha..
The Atom
Atom was derived from the Greek word 'atoms', meaning 'indivisible'. Thus, it was considered to be indivisible.Atoms of the same element are identical in shape, size, mass and other properties.Atoms cannot be created, divided or destroyed during any che..
Atomicity
Atomicity is the number of atoms of an element present in one molecule of that element. They can be monoatomic (He), diatomic (H 2 ), triatomic (O 3 ) and polyatomic (S 8 ..
Atomicity
Hydrogen is diatomic (H 2 ) whereas alkali metals are monoatomi..
Size of the atom
The bond length increases with increase in the size of the atom. From the above values it is clear that the bond lengths for a given family increase with increase in atomic number. For example, C-C < Si-Si < Ge-Ge This is because with the increase in s..
Atomic radii
The size of the atom is significant in governing its property. If the atom is assumed to be spherical, then the radius of the sphere gives the atomic radius. But it is difficult to exactly determine the radius of the atom because The probability of finding..
Atoms and Ions
Listed below are some elements that attain the octet configuration of Noble gases. Let us see how this happens. Study the given table: ..
Listed below are some elements that attain the octet configuration of Noble gases. Let us see how this happens. Study the given table: .. Result
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