Atomic Structure and Bonding Questions and Answers

Which process involves a change of state?

Which method is not suitable for separating a mixture of sand and water?

An example of a solid with a giant molecular structure is

Which pair correctly describes the structure of an atom?

Fig. 1 shows structures of four atoms/ions, A, B, C and D, drawn as nucleus-and-shell diagrams. Structures A and D have the same number of…

In Fig. 1, atom A forms a covalent compound with hydrogen, shown by a dot-and-cross diagram in which A shares one electron pair with each…

Methane (CH4) is the covalent compound formed when atom A in Fig. 1 bonds with four hydrogen atoms. Which of the following statements about…

Chlorine-35, ³⁵Cl, has atomic (proton) number 17. State the number of neutrons in one atom of chlorine-35.

Which statement correctly describes a difference between a chlorine atom, Cl, and a chloride ion, Cl⁻?

Carbon tetrachloride, CCl4, is a liquid at room temperature while calcium chloride, CaCl2, is a solid. This is because...

An element X has the electron configuration 2, 8, 3. In which period of the periodic table is X located?

An element X has the electron configuration 2, 8, 3. State, in one word, whether X is a metal or a non-metal.

Which of the following correctly defines the term diffusion?

Cotton wool soaked in concentrated ammonia is placed at one end of a glass tube, and cotton wool soaked in concentrated hydrochloric acid…

Element E has an electron arrangement of 2,8,7 across its three shells. What is the number of protons in atom E?

Element D has an electron arrangement of 2,8,2 across its three shells, and exists as a solid metal. What type of bonding exists between…