Question

1. which two substance are covalent compounds?

c₆h₁₂o₆ & ki
nacl & hcl
ki & nacl
c₆h₁₂o₆ & hcl

Explanation:

Step1: Understand covalent compounds

Covalent compounds are formed by sharing of electrons between non - metal atoms.

Step2: Analyze each option

• Option A: \(C_{6}H_{12}O_{6}\) (glucose, non - metals sharing electrons, covalent) and \(KI\) (formed by \(K^{+}\) and \(I^{-}\), ionic as it has a metal \(K\) and non - metal \(I\) with transfer of electrons).
• Option B: \(NaCl\) (formed by \(Na^{+}\) and \(Cl^{-}\), ionic as it has a metal \(Na\) and non - metal \(Cl\) with transfer of electrons) and \(HCl\) (covalent, non - metals \(H\) and \(Cl\) sharing electrons).
• Option C: \(KI\) (ionic) and \(NaCl\) (ionic).
• Option D: \(C_{6}H_{12}O_{6}\) (covalent) and \(HCl\) (covalent). \(C_{6}H_{12}O_{6}\) has non - metals \(C\), \(H\), \(O\) sharing electrons. \(HCl\) has non - metals \(H\) and \(Cl\) sharing electrons.

Answer:

D. \(C_{6}H_{12}O_{6}\ \&\ HCl\)