C. Match the correct answer from [i], [ii], [iii], [iv], [v] - for each statement given below: [i] Boron [ü] Chlorine [iii] Potassium [iv] Platinum [v] Radon (a) The element placed in the extreme left of the Modern Periodic Table. (b) The element which shows properties of both metals & non-metals. (c) The element from the halogen family which is most abundant. (d) The element which is a noble gas and radioactive in nature. (e) The element which is noble metal.​

Neils bohr believed that electrons orbited the nucleus in different energy levels, based on strong support from

What is the temperature of 0.750 mol of a gas stored in a 6,850 ml cylinder at 2.21 atm? . 2.95 k 5.24 k 138 k 246 k

Modern pennies are composed of zinc coated with copper. a student determines the mass of a penny to be 2.482 g and then makes several scratches in the copper coaling (to expose the underlying zinc). the student puts the scratched penny in hydrochloric acid, where the following reaction occurs between the zinc and the hcl (the copper remains undissolved): zn(s) + 2 hcl(aq) → h2(g) + zncl(aq)the student collects the hydrogen produced over water at 25 °c. the collected gas occupies a volume of 0.899 l at a total pressure of 79 j mmhg. calculate the percent zinc (by mass) in the penny. (assume that all the zn in the penny dissolves.)