The maximum valency of an element with atomic number is?
Valency is according to valence shell configuration which here is 1s2, 2s2, 2p3, ie, 5.
For electron affinity of halogens, which of the following is correct?
Which one of the following has the highest electronegativity?
The outermost electronic configuration of the most electronegative element is
Fluorine has low electron affinity than chlorine because of
The second electron affinity is zero for
Which one of the following combinations represents a metallic element?
Which one of the following process requiring absorption of energy?
Which has highest melting point?
Which of the following metals exhibits more than one oxidation state?
The correct order of reactivity of halogens is