Question

Two elements P and Q belongs to the same period of the modern periodic table and are in group 1 and
Group 2 respectively. Compare their following characteristics in tabular form:
(i) Their formula of their oxides.
(ii) Their tendency to loss electrons.
(iii) The size of their atoms.
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Answer 1

Answer:

) P - will have 1 valence electron. Q - will have 2 valence electrons. B) P - will have greater atomic size as nuclear charge will be less. Q - will have smaller atomic size as nuclear pull will increase with increase in no. of electrons. C) P- is more metallic. Q- is less metallic. D) P - likely to lose electron. Q - less likely to lose electron. E) P - P2O Q - QO F) P - PCl Q - QCL2