Homework Chapter 5 Chemical Bond

1 Table below shows the proton numbers of element W, X, Y and Z (which are not the real symbols of the elements)

Element W X Y Z
Proton No 10 11 17 18

a) Write the electronic configuration of W, X, Y and Z

Element W : ________________
Element X : ________________
Element Y : ________________
Element Z : ________________

b) Which of the element have the stable electronic structures? Explain your answers

c) Element X reacts with element Y to form a compound.
i) Give the molecular formula of the compound form by X and Y

ii) State the type of bonding in the compound formed in (c) i

iii) Give one physical property of the compound

iv) Draw the electronic structure of the particles presend in the compound


Essay Quesion 1
a) When potassium reacts with an element from Group 17 of the Periodic Table, a compound is formed. Explain in terms of electron arrangment, why this compound has high melting and boiling points
b) Describe how covalent bonds are formed using hydrogen and chloride (HCl) as an example.
c) Draw the hydrogen chloride does not conduct electricity when dissolved in chloroform but conducts electricity when dissolved in water.

Essay Question 2
By using suitable example, describe the covalent and ionic bond [14 m]



Pls send the answer next week.