In general, at room temperature A) ionic compounds are all solids and covalent c
ID: 520117 • Letter: I
Question
In general, at room temperature A) ionic compounds are all solids and covalent compounds are all gases. B) ionic compounds are all solids, and covalent compounds are liquids or gases. C) ionic compounds are all solids, but covalent compounds may be solids, liquids, or gases. D) covalent compounds are all gases, but ionic compounds may be solids, liquids, or gases. Which element has the most favorable (most negative) electron affinity? A) C B) Li C) B D) N Give the electronic configuration for Mn^3+. A) [Kr]4s^13d^3 B) [Ar]2s^2 2p^6 3d^4 C) [Ar]4s^2 3d^2 D) [Ar]3d^4 Which molecule has the weakest bonds? A) CCl_4 B) CBr_4 C) CF_4 D) Cl_4 A molecular model of SO_4^2- is shown below. Based on the best Lewis electron-dot structure for SO_4^2- and formal charge considerations, what is the predicted S O bond order for each S O bond? A) 1.5 B) 2 C) 1 D) 1.33Explanation / Answer
Q8.
room temperature = 25°C, P = 1 atm
so
a)
ionic compounds are typically solids, since they have melting points very high due to ionic bond
covalent comopunds are either solid, liquid or gases, depend on their polar/nonpolar nature
examples:
Fats --> solid at room T
oils --> liquid at room T
gas --> methane
best answer is C