Question
Give scientific Reason :
Elements belonging to the same group have the same valency.
Elements belonging to the same group have the same valency.
✓
Answer
(i) Valency is the number of electrons donated, accepted or shared by the atoms of an elements so to complete the octet in the outermost orbit.
(ii) Valency is dependent upon the number of valence electrons present in the outermost shell of an atom called valence electrons.
(iii) Elements in the same group have same number of valence electrons, irrespective of the number of orbits. Hence, elements in the same group have the same valency.
(ii) Valency is dependent upon the number of valence electrons present in the outermost shell of an atom called valence electrons.
(iii) Elements in the same group have same number of valence electrons, irrespective of the number of orbits. Hence, elements in the same group have the same valency.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Explain giving one example, how highly reactive metals (which are high up in the reactivity series) are extracted.
Describe some of the problems associated with the construction of dams.
Your brother studying in XII has developed the stress.
What steps would you suggest to reduce energy consumption?
i. Which substance is used to produce cheese?
ii. Which enzyme was used earlier for cheese production?
iii. Which enzyme is used to produce vegetarian cheese?
ii. Which enzyme was used earlier for cheese production?
iii. Which enzyme is used to produce vegetarian cheese?
i. Which process is shown in the above given picture?
ii. Give two examples for liquid fuels and solid fuels obtained by this process.
A concave lens has focal length 15cm. At what distance should the object from the lens be placed so that it forms an image at 10cm from the lens? Also find the magnification produced by the lens.
Which fuels are obtained from biomass?
Which precautions are necessary for proper decomposition of domestic waste?
Name two metals which react violently with cold water. Write any three observations you would make when such a metal is dropped into water. How would you identify the gas evolved, if any, during the reaction?