C4b-Ionic bonding Flashcards Preview

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Flashcards in C4b-Ionic bonding Deck (9)
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1

What is an ion?

A charged atom or group of atoms

2

What atoms have a stable electronic structure?

Atoms with an outer shell of i8

3

Why do metal atoms form positive ions?

When metals form ions, they lose electrons to form positive ions

4

Why do non metals form negative ions?

When non metal ions, they gain electrons to form negative ions

5

How do a metal and a non metal combine in ionic bonding?

In ionic bonding, a metal and non metal combine by transferring electrons to form positive ions and negative ions which then attract one another

6

In which state can sodium chloride conduct electricity?

It is non conductive in its solid state but does when dissolved in water(solution)

7

Why do magnesium oxide and sodium chloride conduct electricity when dissolved?

When they melt the ions are free to move and can carry the electric current

8

Why does magnesium oxide have a higher melting point than sodium chloride?

Mg2+ and O2- ions have a greater number of charges, so they form stronger ionic bonds than the Na+ and Cl- ions in sodium chloride.
The attraction between them is harder to overcome

9

What is the structure of sodium chloride and magnesium oxide?

A giant ionic lattice in which positive ions are strongly attracted to negative ions