The ionic model

The final step can be summarized as: $\ce{3NO2(g) + H2O(l) -> 2HNO3(aq) + NO(g)}$ $\Delta H^\ominus = -138\ \mathrm{kJ\,mol^{-1}}$ Describe the types of bonding found in the concentrated aqueous nitric acid product.

What is the correct formula of calcium phosphide? A. $\ce{Ca3P2}$ B. $\ce{Ca2P3}$ C. $\ce{CaPO4}$ D. $\ce{Ca3(PO4)2}$

Which properties are expected for the compound lithium bromide? A. Not soluble in water, low melting point, does not conduct electricity when solid, does not conduct electricity when molten B. Not soluble in water, low melting point, conducts electricity when…

Gallium forms a sulfate of formula $\ce{Ga2(SO4)3}$. (i) Both ionic and covalent bonding are present in this compound. State which particles are held together by each type of bond. (ii) Contrast covalent and ionic bonds in terms of what happens to the valence…

Both ionic and covalent bonding are present in sodium ethanedioate, $\ce{Na2C2O4}$. (i) Describe the two types of bonding. Ionic bonding: Covalent bonding: (ii) Deduce a Lewis formula of the ethanedioate ion, $\ce{C2O4^2-}$. (iii) State the geometry of the…

What is the charge of the monatomic ion usually formed by the element with the following electron configuration? $\ce{[Ne] 3s^2 3p^4}$ A. 2+ B. 2− C. 4+ D. 6+

Calcium ions and phosphate(V) ions combine to form an ionic compound. What is its formula? A. $\ce{CaPO4}$ B. $\ce{Ca2(PO4)3}$ C. $\ce{Ca3(PO4)2}$ D. $\ce{Ca3(PO3)2}$

Which row shows the correct formula of aluminium sulfide and the electron configuration of each species in it? A. $\ce{Al3S2}$; Al species [Ne]; S species [Ar] B. $\ce{Al2S3}$; Al species [Ne] $3s^2\,3p^1$; S species [Ne] $3s^2\,3p^4$ C. $\ce{Al2S3}$; Al…

A white crystalline solid has the properties shown in the table. Property Observation Melting point 770 °C Electrical conductivity of the solid none Electrical conductivity when molten good Solubility in water soluble Which structure is consistent with these…

Which of these compounds has the weakest ionic bond? A. $\ce{SrO}$ B. $\ce{BaO}$ C. $\ce{SrS}$ D. $\ce{BaS}$