313513
In which one of the following cases, breaking of covalent bond takes place?
1 Boiling of \(\mathrm{H}_{2} \mathrm{O}\)
2 Melting of \(\mathrm{KCN}\)
3 Boiling of \(\mathrm{CF}_{4}\)
4 Melting of \(\mathrm{SiO}_{2}\)
Explanation:
\(\mathrm{SiO}_{2}\) is a covalent three dimensional network solid in which \(\mathrm{SiO}_{2}\) show tetrahedral geometry. \(\mathrm{In}, \mathrm{SiO}_{2}\) ,Si-atom is surrounded by 4 oxygen atoms. When \(\mathrm{SiO}_{2}\) is melted, the three dimensional network structure breaks due to breaking of covalent bond.
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE
313514
How many of the following compound(s) contain(s) no covalent bond(s)? \({\mathrm{\mathrm{KCl}, \mathrm{KCN}, \mathrm{PH}_{3}, \mathrm{O}_{2}, \mathrm{~B}_{2} \mathrm{H}_{6}, \mathrm{CO}_{2}, \mathrm{H}_{2} \mathrm{SO}_{4}}}\)
313513
In which one of the following cases, breaking of covalent bond takes place?
1 Boiling of \(\mathrm{H}_{2} \mathrm{O}\)
2 Melting of \(\mathrm{KCN}\)
3 Boiling of \(\mathrm{CF}_{4}\)
4 Melting of \(\mathrm{SiO}_{2}\)
Explanation:
\(\mathrm{SiO}_{2}\) is a covalent three dimensional network solid in which \(\mathrm{SiO}_{2}\) show tetrahedral geometry. \(\mathrm{In}, \mathrm{SiO}_{2}\) ,Si-atom is surrounded by 4 oxygen atoms. When \(\mathrm{SiO}_{2}\) is melted, the three dimensional network structure breaks due to breaking of covalent bond.
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE
313514
How many of the following compound(s) contain(s) no covalent bond(s)? \({\mathrm{\mathrm{KCl}, \mathrm{KCN}, \mathrm{PH}_{3}, \mathrm{O}_{2}, \mathrm{~B}_{2} \mathrm{H}_{6}, \mathrm{CO}_{2}, \mathrm{H}_{2} \mathrm{SO}_{4}}}\)
313513
In which one of the following cases, breaking of covalent bond takes place?
1 Boiling of \(\mathrm{H}_{2} \mathrm{O}\)
2 Melting of \(\mathrm{KCN}\)
3 Boiling of \(\mathrm{CF}_{4}\)
4 Melting of \(\mathrm{SiO}_{2}\)
Explanation:
\(\mathrm{SiO}_{2}\) is a covalent three dimensional network solid in which \(\mathrm{SiO}_{2}\) show tetrahedral geometry. \(\mathrm{In}, \mathrm{SiO}_{2}\) ,Si-atom is surrounded by 4 oxygen atoms. When \(\mathrm{SiO}_{2}\) is melted, the three dimensional network structure breaks due to breaking of covalent bond.
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE
313514
How many of the following compound(s) contain(s) no covalent bond(s)? \({\mathrm{\mathrm{KCl}, \mathrm{KCN}, \mathrm{PH}_{3}, \mathrm{O}_{2}, \mathrm{~B}_{2} \mathrm{H}_{6}, \mathrm{CO}_{2}, \mathrm{H}_{2} \mathrm{SO}_{4}}}\)
313513
In which one of the following cases, breaking of covalent bond takes place?
1 Boiling of \(\mathrm{H}_{2} \mathrm{O}\)
2 Melting of \(\mathrm{KCN}\)
3 Boiling of \(\mathrm{CF}_{4}\)
4 Melting of \(\mathrm{SiO}_{2}\)
Explanation:
\(\mathrm{SiO}_{2}\) is a covalent three dimensional network solid in which \(\mathrm{SiO}_{2}\) show tetrahedral geometry. \(\mathrm{In}, \mathrm{SiO}_{2}\) ,Si-atom is surrounded by 4 oxygen atoms. When \(\mathrm{SiO}_{2}\) is melted, the three dimensional network structure breaks due to breaking of covalent bond.
CHXI04:CHEMICAL BONDING AND MOLECULAR STRUCTURE
313514
How many of the following compound(s) contain(s) no covalent bond(s)? \({\mathrm{\mathrm{KCl}, \mathrm{KCN}, \mathrm{PH}_{3}, \mathrm{O}_{2}, \mathrm{~B}_{2} \mathrm{H}_{6}, \mathrm{CO}_{2}, \mathrm{H}_{2} \mathrm{SO}_{4}}}\)
