12. Sodium and aluminium have atomic numbers 11
and 13 respectively. They are separated by one
element in the periodic table and have valencies 1
and 3 respectively. Chlorine and potassium are also
separated by one element in the periodic table. Their
atomic numbers are 17 and 19 respectively, but both
have a valency of 1. Explain why.
Answers
Answer:
Chlorine =17=2,8,7 while potassium=19=2,8,8,1. So Cl requires one electron to complete its octet and its valency is 1 while K has one electron in its outermost shell which it can easily loose to complete its octet and can attain the most balanced state after forming an octet. So both has valency 1.
Explanation:
CHEMISTRY
Assertion
Sodium and aluminium have atomic numbers 11 and 13, respectively. They are separated by one element in the periodic table, and have valencies 1 and 3 respectively. Chlorine and potassium are also separated by element in the periodic table (their atomic number being 17 and 19 respectively) and yet both have valency 1.
Reason
Cl requires one electron to complete its octet and its valency is 1 while K has one electron in its outermost shell which it can easily loose to complete its octet and can attain the most balanced state after forming an octet. So both has valency 1.
Answer:
Chlorine =17=2,8,7 while potassium=19=2,8,8,1. So Cl requires one electron to complete its octet and its valency is 1 while K has one electron in its outermost shell which it can easily loose to complete its octet and can attain the most balanced state after forming an octet. So both has valency 1.
Explanation:
CHEMISTRY
Assertion
Sodium and aluminium have atomic numbers 11 and 13, respectively. They are separated by one element in the periodic table, and have valencies 1 and 3 respectively. Chlorine and potassium are also separated by element in the periodic table (their atomic number being 17 and 19 respectively) and yet both have valency 1.
Reason
Cl requires one electron to complete its octet and its valency is 1 while K has one electron in its outermost shell which it can easily loose to complete its octet and can attain the most balanced state after forming an octet. So both has valency 1.
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