Classification ...

Argon in period-3 is likely to have a larger atomic size than chlorine and its electron affinity value would be _______compared to chlorine.

Atom with ____atomic radii and ___ionisation potential tends to gain electrons

Electronic configuration of Mg is:

The formula of the hydroxide of the element having electronic configuration 2, 8, 2 is :

The character of the hydroxide of the element $$Al$$:

Which is the metallic element?

Match column I with column II and select the correct answer using the codes given below:
           Column I                                 Column II
(A)  $$_{ 6 }^{ 14 }{ C }$$ and $$_{ 6 }^{ 13 }{ C }$$           (p)  Different number of neutrons
(B)  $$_{ 20 }^{ 40 }{ C a}$$ and $$_{ 18 }^{ 40 }{ Ar }$$       (q)  Different number of protons and neutrons
(C)  $$K \left(19\right)$$                    (r)  Non-metal
(D)  Chlorine $$\left(17\right)$$         (s)  Metal                                

Which of the following element has highest electron-gain enthalpy?

Compare the properties of metals and non-metals with respect to electronic configuration.