Bonding(year ten)

The questions in your test are set out below. You do not lose marks for wrong answers. Once you have completed the test, click Submit.

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1. Atom “X” has 12 electrons, 12 protons and 15 neutrons.
This atom is most likely to:

A) have the electronic configuration 2,8,5

B) give up 10 electrons so that it can be as stable as helium.

C) take electrons from other atoms in order to fill its outer energy level

D) form an ion with a charge of +2;

E) form an ion with a charge of -2

2. The diagram on the right represents an atom of:

A) nitrogen;

B) carbon;

C) fluorine;

D) neon;

E) sodium.

3. The atom pictured on the right is:

A) likely to give up 3 electrons to another atom;

B) likely to take 2 electrons from another atom;

C) stable and will not exchange electrons with other atoms;

D) an atom of oxygen that has gained two extra electrons from another atom;

E) an atom of sodium that has lost an electron.

4. The diagram on the right represents an atom. Which one statement below is true?

A) The diagram represents an atom of berylium that has gained two electrons.

B) The diagram represents an atom of helium that has reacted with another atom to give away two of its electrons electrons.

C) The atom is that of boron that has lost three electrons.

D) The atom is berylium with a charge of +2.

E) The atom is that of helium.

5. The diagram on the right represents an atom of:

A) oxygen with a charge of -2;

B) fluorine;

C) neon;

D) sodium with a charge of +1;

E) carbon.

6. The diagram on the right is that of an atom after it has reacted with another. Which comment below is true?

A) The atom is that of lithium with one electron missing.

B) The atom is that of helium with one electron missing.

C) The atom is that of boron with one electron missing.

D) The atom is that of hydrogen with one extra electron.

E) The atom is that of carbon with four electrons missing.

7. The diagram on the right represents an atom of:

A) neon;

B) nitrogen with a charge of -3;

C) carbon with a charge of -4;

D) sodium with a charge of +1;

E) fluorine with a charge of -1.

8. When berylium and oxygen react:

A) a compound is formed with the formula Be₂O₆.

B) a compound is formed with the formula Be₂O₄.

C) a compound is formed with the formula BeO₂.

D) a compound is formed with the formula Be₂O.

E) a compound is formed with the formula BeO.

9. The atom represented on the right has most likely:

A) gained one electron;

B) lost two protons;

C) lost three protons;

D) gained three electrons;

E) lost three electron.