In group `15` elements, the number of unpaired electrons in valence shell is____.

The number of unpaired electrons in the valence shell of silicon is

The number of unpaired electrons in the valence shell of silicon is

The number of unpaired electrons in chromium (Z = 24) is____.

Set of elements having one electron in their valence shell is :-

Set of elements having one electron in their valence shell is :-

The group in the modern periode table, in which all the elements do not have same number of electrons in their valence shell is :

The group in the modern periode table, in which all the elements do not have same number of electrons in their valence shell is :

An element has 8 electrons in the valence shell

The number of p-electrons in the valence shell of element of group 14 is

The number of electrons present in the valence shell of group 13: