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Sagot :
The answer is (4) Na2CO3. The bond inside CO₃²⁻ ion is covalent bonds. And the bond between the Na+ ion and CO₃²⁻ ion is ionic bonds. So Na2CO3 has both ionic and covalent bonds.
The compound that has both ionic and covalent bonds is [tex]\boxed{{\mathbf{4}}{\mathbf{.}}{\text{ }}{\mathbf{N}}{{\mathbf{a}}_{\mathbf{2}}}{\mathbf{C}}{{\mathbf{O}}_{\mathbf{3}}}}[/tex].
Further explanation:
The periodic properties are characteristics that are associated with the different elements found in the periodic table. The origin of different properties is the difference in the atomic structure of the different elements.
For a systematic study of the chemical and physical properties of different elements, they are placed in certain columns called groups and horizontal rows called periods. The rows of the table called periods and have metals on the left and non-metals on the right. The columns also called groups contains elements with similar chemical properties.
The ionic bond is a chemical bond between two atoms in which one atom donates its electron to another atom. While covalent bonds involve sharing of electrons between two atoms and reach a more stable electron configuration.
Compounds made from two elements can either have an ionic or covalent bond.
(i) If a compound is made between metal and a non-metal then the bond will be ionic.
(ii)If a compound is made between two non-metals then the bond will be covalent.
(1) In [tex]{\mathbf{C}}{{\mathbf{O}}_{\mathbf{2}}}[/tex], oxygen(O) and carbon(C) are nonmetals. They form a covalent compound, and bond present in [tex]{\mathbf{C}}{{\mathbf{O}}_{\mathbf{2}}}[/tex]will be covalent bond.
(2) In NaI, sodium (Na) is metal and iodine (I) is a nonmetal. They will form an ionic compound, and bond present NaI will be ionic.
(3) In [tex]{\mathbf{C}}{{\mathbf{H}}_{\mathbf{3}}}{\mathbf{OH}}[/tex], carbon(C) hydrogen(H) and oxygen(O) all are nonmetal atoms they will form a covalent compound, and bond present in will be covalent.
(4) In [tex]{\mathbf{N}}{{\mathbf{a}}_{\mathbf{2}}}{\mathbf{C}}{{\mathbf{O}}_{\mathbf{3}}}[/tex], sodium(Na) is metal, carbon(C) and oxygen(O) are nonmetals atoms. The bond form between sodium and carbon will be ionic. Also, the bond formed between carbon and oxygen is covalent as both carbon and oxygen are nonmetals. Therefore, [tex]{\text{N}}{{\text{a}}_{\text{2}}}{\text{C}}{{\text{O}}_{\text{3}}}[/tex] has both covalent and ionic bond.
Hence the correct option is 4.
Learn more:
1. Calculate number of solutes: https://brainly.com/question/8054051.
2. How many moles of Cl are there in 8 moles of CCl4: https://brainly.com/question/2094744
Answer details:
Grade: High School
Subject: Chemistry
Chapter: Chemical bonding.
Keywords: Ionic bond, covalent bond, metal, nonmetal, NaI, CO2, Na2CO3, and CH3OH.
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