Which element of second period forms most acidic oxide?
Along the period acidic strength of oxide increases.
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 maximum valency of an element with atomic number is?
The correct order of reactivity of halogens is
The correct order of increasing oxidizing power is
Which of the following oxides is most basic?
An element X which occurs in the first short period has an outer electronic structure s2p1. What are the formula and acid-base character of its oxides?