Chapter 4 Revision

Write the electronic structure for Cl^- ： _, _, _ (number only)

(a)  

When an aluminium atom becomes an ion, it will......

• gaining 3 electrons

• gaining 5 electrons

• losing 3 electrons

• losing 5 electrons

Ionic bonds are between...

• Metal and Non-metal
• Non-metal and Non-metal
• Metal and Metal

Tags

NGSS.HS-PS1-2

How are ionic bonds formed?

• Transfer of electrons
• Sharing of electrons

Why do elements bond?

• To be friends
• To create a new element
• To become stable

Tags

NGSS.HS-PS1-4

The attraction between oppositely charged ions is called (a)   attraction.

Covalent compounds/molecules (have)...

• soluble in water

• high volatility

• does not conduct electricity

• high m.p. and b.p.

How many lone pair of electrons are there in a NH₃ molecule?

(a)  

Write down the name of CP.

(a)  

In covalent bonds, electrons are (a)   between atoms.