Two elements P' and 'Q' belong to the same period of the modern periodic table and are in group 1 and group 2? respectively. Compare the following characteristics in
tabular form.
(a) number of electrons in their valence shell,
(b) their tendency to lose electrons.
(c) their metallic characters.
(d) formation of their oxides.
(e) formulae of their chlorides.
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Answers
Answer:
First of all, if they are in Group 1 and 2 , they are alkali metals and alkaline earth metals.
Also, the Atomic Number of second is just 1 greater than the first one.
a- Q has one more valence electron than P
b- P only has one electron so it can lose it easily hence tendency to lose electron and reactivity is greater.
c- Metallic character is greater of P since it only has one electron which can be removed easily and it has better 'reducing nature'.
d- 2 atoms of P will make oxide with 1 atom of Oxygen by denoting kne electron each..hence formula will be P2O.
Whereas one atom of Q and one atom of Oxygen will make oxide with the general formula.. QO
The oxide of P will be more basic than oxide of Q.
e- Formula of chloride of P is PCl
Formula of chloride of Q is QCL2.
P.S. The 2 in P2O and QCl2 should be written in subscript form..
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