chemical bonding

helium is an element from Group 18/8/0 in the Periodic Table. Helium is said to be very stable as helium has ___________________ electron arrangement.

Neon and Argon are from Group 18 in Periodic Table. They are said to be inert as they have _________________ electrons arrangement.

ionic bonding is a bond formed between..........

• metal and metal

• non-metal and semi metal

• metal and non-metal

• non-metal and non-metal

When an ionic bonding is formed, a non metal atom always ............................. electron and form ......................... ion

• donate , negative

• receive, negative

• donate, positive

• receive, positive

Element X is from Group 2, to achieve stability, atom X will ............................................ and form .............................

• donate two electrons, X^2- ion

• donate two electrons , X²⁺ ion

• share two electrons, molecule

• receive two electrons, X^2- ion

Atom X has proton number 12. Atom Y has proton number 17. Element X and Y combine to form an ionic compound with formula..................

• XY

• X₂Y

• XY₂

• XY₃

atom X has proton number 19, and it combines with atom Y to form ionic compound with formula X₂Y. Which two of the following are most likely the proton number of element Y?

• 8

• 16

• 17

• 18

which two of the following compounds are ionic compounds?

• aluminium oxide

• magnesium

• carbon dioxide

• magnesium chloride

magnesium oxide is an ionic compound with high melting point and boiling point because the ............................... force of attraction is very strong.

which two of the compounds below conduct electricity only in molten and aqueous state?

• sodium chloride

• lead (II) bromide

• glucose

• naphthalene