Question

19. Which of the following statements regarding ionic compounds is correct? A) Ions are held together in an ionic lattice by covalent bonds. B) The crystal structure of a given compound does not depend on the sizes and number of ions in a formula unit of the compound. C) Ionic compounds tend to have low melting points. D) Ionic compounds are formed when two metals react. E) In forming an ionic compound from its elements, one element transfers one or more electrons to another element. 20. Which of the following statements regarding covalent bonding is incorrect? A) Hydrogen atoms in a Lewis structure will have eight electrons around the H symbol. B) Covalent bonds occur between nonmetals. C) Two atoms may share up to three pairs of electrons. D) Carbon typically forms four bonds. E) The elements which exist as diatomic molecules do so in order to achieve a stable electron configuration.

Answer 1

E) соллес " Because An atom transfers electorens to become positive changed (cation) and other atom recieves electron to become negative charged canien) 0 A "incorrect statement two Hydrogen alom can only have electrons around it.