PRIYANKA B Solutions for Chapter: Periodic Classification of Elements, Exercise 1: Value Based Questions

An element having three shells and number of electrons in third shell is thrice of electrons in first shell, the element is:

The element that is a metalloid is:

The chloride of group $13$ element $\mathrm{M}$ will be:

Law of octaves was applicable up to:

Electronic configuration of an element is $2,\mathrm{}8,\mathrm{}8$. It is present in:

Which of the following will have maximum number of valence electrons?

The example of metalloid is:

Which of the following does not change while moving down the group in the periodic table?