ATOMIC STRUCTURE ASSIGNMENT

Question 1

The full symbol of an atom of elements X is

(a)        (i)         State the number of protons in X.

(ii)        Write the electronic configuration of X.

State the group in the Periodic Table to which X belongs.

(b)        (i)         Write the formula of the oxide of X.

Question 2

Name the three fundamental particles in an atom.

(ii)        With the aid of a labelled diagram, describe how the three particles are located in an atom.

Question 3

The atomic numbers of elements W, X and Y are 6, 12 and 17 respectively.

(i)         Write the electronic configurations of W, X and Y.

(ii)        Using the outermost shell electrons only, draw a diagram to show how W and Y form a

compound.

Question 4

An atom of element X contains 15 electrons and 16 neutrons.

(a)    (i)      State the mass number of X.

(ii)     Write the electronic structure of X.

(b)    (i)      Write the formula of a chloride of X

Question 5

An element M has electronic structure 2:8:8:2.

(a)    State the group to which this element belongs in the Periodic Table.

(b)    Element M was put in warm water.

(i)      State what was observed.

(ii)     Write equation for the reaction that took place.

(c)     Name one use of element M.