The Modern Periodic Table

State the modern periodic law.

Write two elements for the following:

Noble gases

Write two elements for the following:

Halogens

Write two elements for the following:

Alkali earth metals

Write two elements for the following:

Alkali metals

What are metalloids?

The family of elements having seven electrons in the outermost shell is:

An element has configuration $2, 8, 1$. It belongs to,

Scientists often have to organise information in a way that is logical. The periodic table is a good example of this. Use an Internet search to find a picture of the periodic table depicted as a spiral. Is this a good depiction of the information? 

Scientists often have to organise information in a way that is logical. The periodic table is a good example of this. Are there other ways in which the information could be presented? 

Scientists often have to organise information in a way that is logical. The periodic table is a good example of this. In which ways are the periodic table a better way of organising the information than a list? Are there any benefits to a list? 

What is the symbol of the element in Group 2 and Period 4? $\left[\mathrm{Mg}/ \mathrm{Ca}/ \mathrm{Sr}\right]$

The atomic number of nitrogen is $7$. So, valency of nitrogen is $5$.

Atomic numbers of five elements $\mathrm{A}, \mathrm{B}, \mathrm{C}, \mathrm{D}$ and $\mathrm{E}$ are $6, 8, 3, 7$ and $9$ respectively. Among these which elements have highest electropositivity?

$11, 12, 13$ and $14$ are the atomic numbers $\mathrm{Na}, \mathrm{Mg}, \mathrm{Al}$ and $\mathrm{Si}$ respectively. Which element have more atomic radius ?

Observe the given table and answer the following question:

The elements that belong to the same period are:

Observe the given table and answer the following question:

The elements that belong to the same group are:

In the modern periodic table, the elements are arranged in the increasing order of their _____.

Identify the metals from the following elements that are present in the Modern periodic table

Atomic size of elements increases from top to bottom in a group as more electrons are added to the same _____. (atom / shell)