Element Z forms a stable ion Z3– which has the electron configuration 2,8,8. To which Group and Period of the Periodic Table does Z belong? Answer: 2) D The ion…

A sample of an element consists of two isotopes. The relative abundance of each isotope isshown in the table.What is the relative atomic mass of the element in this sample?…

A cleaning solution is used to remove limescale, CaCO 3, from bathroom surfaces. When the solution is sprayed onto the limescale, effervescence (fizzing) occurs and the solid limescale begins to…

Elements Q and Z are shown in the Periodic Table as: What is the empirical formula and bonding type of the compound formed between these elements? Answer: 2) C Q…

The diagram shows an electrolysis experiment. Which reaction occurs at the anode and which reaction occurs at the cathode for this experiment? Answer: 2) E You must first know what…

Element X has the electronic structure 2, 8, 3.Which of the following statements about this element are correct?1 The element is in Group 12, Period 3 of the Periodic Table.2…

Which of the following organic compounds will decolourise bromine water by reacting with it at room temperature? Answer: 2) C Only alkenes are the organic compounds which turn orange-brown bromine…