2
two
each atom in the covalent bond is donating 1 electron. so a single covalent bond is 2 electrons.
The proton number within the nucleus remains the same.
A single covalent bond is formed by two electrons
The sharing of electrons in polar covalent bonds is unequal.
two
each atom in the covalent bond is donating 1 electron. so a single covalent bond is 2 electrons.
The proton number within the nucleus remains the same.
A single covalent bond is formed by two electrons
The sharing of electrons in polar covalent bonds is unequal.
A Covalent bond is a form of chemical bonding that is characterized by the sharing of pairs of electrons between atoms, and other covalent bonds. In short, the attraction-to-repulsion stability that forms between atoms when they share electrons is known as covalent bonding.
Carbon is in Group V. Thus, it needs 4 more electrons so as to achieve the octet structure in its valence shell. As such, carbon has make at most 4 single covalent bonds. The least number of covalent bonds carbon can make is 2 double bonds. We do not see an example of carbon forming 1 covalent bond involving the sharing of all 4 of its valence electrons.
The electrons are shared between the two atoms that bonded, combining the total number of electrons in a large electron cloud. In a polar covalent bond, one atom shares, or "attracts" most of the atoms, while in a nonpolar covalent, they are equally shared. Covalent atoms are always only shared, unlike with ionic compounds, which "steal" electrons from the other atom.
The number of unpaired electrons determines the number of covalent bonds that can be formed by an atom.
IONIC BOND: The compound formed by completely transporting an electron or a number of electrons is called an ionic compound, and the bond between the elements of the compound is called the ionic bond. EXAMPLE: NaCl is an ionic compound in which the Na atom donates 1 electron to Cl atom to attain stability and thereby to form the compound NaCl. In ionic bond, generally the metals are the electron donors and the nonmetals are the electron acceptors COVALENT BOND: The bond formed by sharing pair(s) of electrons is called covalent bond. In this type of compound, each of the atom shares equal no. of electrons in order to attain stability. A covalent bond can be of three types: single covalent bond, where 1 pair of electrons is shared between the atoms; double covalent bonds, where 2 pairs of electrons are shared; and triple covalent bond, where 3 pairs of electrons are shared.EXAMPLE:N2 molecule is formed by sharing of 3 pairs of electrons, thereby forming a N-N triple bond
2
The number of unpaired electrons in the outermost shell determines the number os covalent bonds an atom can form.