Classification ...

Be and Mg have zero value of electron affinity, because :

The decreasing order of electron affinity of $$F, Cl,$$ and $$Br$$ is:

The electronic configurations of three elements X, Y and Z are $$2, 8$$; $$2, 8, 7$$; and $$2, 8, 2$$ respectively. Which of the following is correct?

The chemistry of lithium is very similar to that of magnesium even though they are placed in different groups. Its reason is that:

The electron affinity :

The electron affinity of fluorine is less than that of chlorine because:

Which of the following element will form most stable bivalent anion?

As we go down in the electro-chemical series of metals, the reactivity ______ .

Compound of a metal $$'M'$$ is $$M_{2}O_{3}$$.The formula of its nitride will be -

In a period the elements are arranged in :