Metal and Non-metal
Because lithium form a cation and sulfur an anion the lithium sulfide (Li2S) form an ionic compound, a salt.
Those on opposite sides of the periodic table (ignoring the noble gases of course). Like sodium and cloride (to make table salt).
Cytosine pairs with guanine Adenine pairs with thymine (or with uracil in RNA)
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
Both. The sulfur ion consists of one atom of sulfur and four of oxygen; because it does not have enough electrons to complete the octet rule for oxygen, it must use electrons from another source, whose charges are not balanced within the ion. The sulfur then forms six covalent bonds with oxygen: two double bond pairs, two single bond pairs. This causes the oxygen atoms with the extra electron to become negatively charged: The zinc ion forms an ionic bond with them and completes the compound.
magnesium and fluorine will formthe ionic compound, MgF2
When atoms share electrons in one or more pairs, they form a new compound by covalent bonding.
oxygen is not a compound it is a diatomic (that means the element comes in pairs)
Sodium and chlorine
CO2 is a covalently bonded compound, taking the form of O=C=O, with two pairs of electrons on each oxygen atom. Ionic compounds involve ionic bonds, such as that of NaCl (Na+ and Cl-).
Because lithium form a cation and sulfur an anion the lithium sulfide (Li2S) form an ionic compound, a salt.
Cytosine pairs with guanine Adenine pairs with thymine (or with uracil in RNA)
Those on opposite sides of the periodic table (ignoring the noble gases of course). Like sodium and cloride (to make table salt).
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
calcium and lithum
Both. The sulfur ion consists of one atom of sulfur and four of oxygen; because it does not have enough electrons to complete the octet rule for oxygen, it must use electrons from another source, whose charges are not balanced within the ion. The sulfur then forms six covalent bonds with oxygen: two double bond pairs, two single bond pairs. This causes the oxygen atoms with the extra electron to become negatively charged: The zinc ion forms an ionic bond with them and completes the compound.
No. Ionic compounds are not made by sharing electrons. Those would be covalent compounds. Ionic compounds are made when one atom donates an electron(s), and the other atoms takes the electron(s).