Covalent and Coordinate Bonds in Molecules

To determine which of the given molecules contain covalent and coordinate bonds, let's analyze each option individually.

(1) CCl4 (Carbon Tetrachloride)
CCl4 is a nonpolar molecule that consists of one carbon atom bonded to four chlorine atoms. All the bonds in CCl4 are covalent bonds. Covalent bonds are formed when atoms share electrons.

(2) H2SO4 (Sulfuric Acid)
H2SO4 is an important compound used in various industries. It consists of two hydrogen atoms, one sulfur atom, and four oxygen atoms. In H2SO4, the bonds between hydrogen and sulfur are covalent bonds, while the bonds between sulfur and oxygen involve coordinate bonds.

In sulfuric acid, one of the oxygen atoms forms a double bond with sulfur, while the other three oxygen atoms are coordinated to sulfur through coordinate bonds. Coordinate bonds are a type of covalent bond where one atom donates a pair of electrons to another atom.

(3) NaCl (Sodium Chloride)
NaCl is a well-known compound commonly known as table salt. It consists of a sodium ion (Na+) and a chloride ion (Cl-). The bond between sodium and chloride in NaCl is an ionic bond. Ionic bonds are formed when there is a transfer of electrons between atoms, resulting in the formation of ions.

(4) Mg(OH)2 (Magnesium Hydroxide)
Mg(OH)2 is a compound that consists of one magnesium ion (Mg2+) and two hydroxide ions (OH-). The bond between magnesium and hydroxide involves an ionic bond. The hydroxide ions donate their lone pair of electrons to form the bond with the magnesium ion.

Summary:
Among the given options, the molecules that contain both covalent and coordinate bonds are:
- H2SO4 (Sulfuric Acid)

Covalent bonds are present in all the molecules, but only sulfuric acid (H2SO4) contains coordinate bonds. The other molecules, CCl4 (Carbon Tetrachloride), NaCl (Sodium Chloride), and Mg(OH)2 (Magnesium Hydroxide), consist of either purely covalent or ionic bonds.

It's first option,CCl4 covalent and coordinate covalent bonds.