Answer
Verified
376.5k+ views
Hint: As we know that covalency tells the number of electrons contributed by an atom for sharing of electrons with other same or different while mutually sharing a covalent bond. So here we have to tell the maximum covalency of chlorine atoms i.e., maximum number of bonds it can possibly make with other atoms or groups.
Complete answer:
Let us first begin with the discussion of chlorine element and covalency followed by calculating its maximum covalency as follows:-
-Chlorine: It is a chemical element denoted by symbol ‘Cl’ and has atomic number 17. It belongs to the halogen family that is group-17 and is the second-lightest of all the halogens available. Its properties are mostly intermediate between fluorine (F) and bromine (Br) elements. Also it is a yellow-green gas at standard temperature and pressure conditions.
-Since it belongs to the halogen group, it has 7 electrons in its valence shell like all the other halogen elements. Also its valency is -1.
-Covalency: It is the number of electrons contributed by an atom for sharing of electrons with another same or different while mutually sharing a covalent bond.
-Maximum covalency is the maximum number of covalent bonds that an atom can form with other atoms. An atom can show maximum covalency up to its group number (especially for elements that have d-orbitals). For example: maximum covalency of sulphur is 6.
-Since chlorine has empty d-orbitals, its valence electrons can jump to excited state and become unpaired for bonding purpose. Total number of valence electrons of chlorine is 7, so its maximum covalency is also 7.
-Hence, the maximum covalency of chlorine is 7.
Note:
-Remember that second period elements have maximum covalency equal to their actual unpaired electrons without any involvement of excitation because they are small in size and do not have empty d-orbitals to jump electrons to excited state.
Complete answer:
Let us first begin with the discussion of chlorine element and covalency followed by calculating its maximum covalency as follows:-
-Chlorine: It is a chemical element denoted by symbol ‘Cl’ and has atomic number 17. It belongs to the halogen family that is group-17 and is the second-lightest of all the halogens available. Its properties are mostly intermediate between fluorine (F) and bromine (Br) elements. Also it is a yellow-green gas at standard temperature and pressure conditions.
-Since it belongs to the halogen group, it has 7 electrons in its valence shell like all the other halogen elements. Also its valency is -1.
-Covalency: It is the number of electrons contributed by an atom for sharing of electrons with another same or different while mutually sharing a covalent bond.
-Maximum covalency is the maximum number of covalent bonds that an atom can form with other atoms. An atom can show maximum covalency up to its group number (especially for elements that have d-orbitals). For example: maximum covalency of sulphur is 6.
-Since chlorine has empty d-orbitals, its valence electrons can jump to excited state and become unpaired for bonding purpose. Total number of valence electrons of chlorine is 7, so its maximum covalency is also 7.
-Hence, the maximum covalency of chlorine is 7.
Note:
-Remember that second period elements have maximum covalency equal to their actual unpaired electrons without any involvement of excitation because they are small in size and do not have empty d-orbitals to jump electrons to excited state.
Recently Updated Pages
How many sigma and pi bonds are present in HCequiv class 11 chemistry CBSE
Mark and label the given geoinformation on the outline class 11 social science CBSE
When people say No pun intended what does that mea class 8 english CBSE
Name the states which share their boundary with Indias class 9 social science CBSE
Give an account of the Northern Plains of India class 9 social science CBSE
Change the following sentences into negative and interrogative class 10 english CBSE
Trending doubts
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
The Equation xxx + 2 is Satisfied when x is Equal to Class 10 Maths
In Indian rupees 1 trillion is equal to how many c class 8 maths CBSE
Which are the Top 10 Largest Countries of the World?
How do you graph the function fx 4x class 9 maths CBSE
Give 10 examples for herbs , shrubs , climbers , creepers
Difference Between Plant Cell and Animal Cell
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
Why is there a time difference of about 5 hours between class 10 social science CBSE