The valency of an element whose electronic configuration is 2
Asked by vermamahima021982 | 27th Aug, 2019, 09:50: PM
An element has atomic no. 2 and electronic configuration 1s2 then its valency is zero because it has completed its duplet.
In case of an element has 2 electrons in its outermost shell will have valency two since to complete the octet it has to loosen those two electrons.
Answered by Ramandeep | 28th Aug, 2019, 11:46: AM
- name two elements of first period in modern periodic table
- how many elements were discovered at the of newland
- can you tell me about structure of atom and electric spectrum and about quantum numbers
- state three main points of difference between Mendeleev periodic table and Modern Periodic Table
- Write the merits of dobereiner's triads.
- What is meant by (I) a group, and (ii) a period, in a periodic table ?
- The position of cobalt and nickel was anomalous pair in Mendeleev's periodic table. Please explain if it was merit or demerit of Mendeleev's periodic table?
- Write note on position of isotopes in the Mendeleev's and modern periodic table
- Dear Sir/Madame, Can you please tell me what are the limitations of Dobeniers's law according to the NCERT textbook and nothing extra. Thank you.
Kindly Sign up for a personalised experience
- Ask Study Doubts
- Sample Papers
- Past Year Papers
- Textbook Solutions
Verify mobile number
Enter the OTP sent to your number