The p-Block Ele...

What is the colour of a solution of $$\mathrm { Al } _ { 2 } \left( \mathrm { SO } _ { 4 } \right) _ { 3 }$$ in water?

Which of the following is amorphous form of silica?

More than four bonds are made by how many elements in carbon family?

Dry ice is

In silicon dioxide:

In the modern periodic table, elements are arranged in order of increasing atomic number which is related to the electronic configuration. Depending upon the type of orbitals receiving the last electron, the elements in the periodic table have been divided into four blocks, viz s, p, d, and f. The modern periodic table consists of 7 periods and 18 groups. Each period begins with the filling of a new energy shell. In accordance with the Aufbau principle filling of a new energy shell. In accordance with the Aufbau principle, the seven-period (1 to 7) have 2,8,8,18,18,32 and 32 elements respectively. The seventh period is still incomplete. To avoid the periodic table being too long, the two series of f - block elements, called lanthanoids and actinoids are placed at the bottom of the main body of the periodic table.
The last elements of the $$p$$-block in 6th period is represented by the outer most electronic configuration.

The element with atomic number 35 belongs to : 

The oxidation state of P in $$ H_3PO_5 $$is :

In view of the signs of $$\Delta_r G^{\circ}$$ for the following reaction
$$PbO_2 + Pb \rightarrow 2 PbO$$, $$\Delta_r G^{\circ}$$ < 0
$$SnO_2 + Sn \rightarrow 2 SnO$$, $$\Delta_r G^{\circ}$$ > 0 which oxidation states are more characteristic for lead and tin?

Colemanite is a mineral of: