Lawrie Ryan and Roger Norris Solutions for Chapter: Group 2, Exercise 5: Question

Radium ($\mathrm{Ra}$) is a radioactive element found below barium at the bottom of Group 2. Applying your knowledge of Group 2, discuss and predict with a partner the formula of its oxide and hydroxide.
 

Radium ($\mathrm{Ra}$) is a radioactive element found below barium at the bottom of Group 2. Applying your knowledge of Group 2, discuss and predict with a partner its first ionisation energy.

Radium ($\mathrm{Ra}$) is a radioactive element found below barium at the bottom of Group 2. Applying your knowledge of Group 2, discuss and predict with a partner its reactivity compared with barium.

Radium ($\mathrm{Ra}$) is a radioactive element found below barium at the bottom of Group 2. Applying your knowledge of Group 2, discuss and predict with a partner the relative pH of its saturated hydroxide solution compared with a saturated solution of calcium hydroxide.

Radium ($\mathrm{Ra}$) is a radioactive element found below barium at the bottom of Group 2. Applying your knowledge of Group 2, discuss and predict with a partner the solubility of its sulfate compared with strontium sulfate.

Radium ($\mathrm{Ra}$) is a radioactive element found below barium at the bottom of Group 2. Applying your knowledge of Group 2, discuss and predict with a partner the equation for the reaction of its solid oxide with dilute hydrochloric acid.
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Radium ($\mathrm{Ra}$) is a radioactive element found below barium at the bottom of Group 2. Applying your knowledge of Group 2, discuss and predict with a partner what you would expect to see if you mixed radium hydroxide solution with dilute sulfuric acid.

The solubility of group 2 hydroxides is given in the table below. Calculate the mass of calcium hydroxide that will dissolve in $50 \mathrm{g}$ of water at $298 \mathrm{K}$.