From the knowledge of periodic table write the stable binary compound that is formed by Al and S.

Nitrogen and phosphorus belong to group 15 of the periodic Table. Write the electronic configuration of these two elements.

Sodium form a crystalline ionic solid with dihydrogen. The solid is non-volatile and non-conducting in nature. It reacts violectly with water to produce dihydrogen gas. Write the formula of this compound and its reaction with water. What will happen on electroysis of the melt of this solid?

If you look at the long form of the Periodic Table, you will find that the elements Li, Be, B,C,N,O,F and Ne are present in the second period. Write down their electronic configuration.

Write the step in glycolysis where NADH^+ H^+ are formed from NAD^+ .

Principal = Rs 1000, Rate = 8% per annum. Fill in the following table find which type of interest (simple or compound) changes in direct proportion with time period.

Write down the name of compounds represent by the following formulae: Al_2(SO_4)_3

Metal compound A reacts with dilute hydrochloric acid to produce effervescence. The gas evolved extinguishes a burning candle. Write a balanced chemical equation for the reaction if one of the compounds formed is calcium chloride.

Write the balance chemical equations (i) Al(s)+ N_2(g) rarr

In a face centred cubic arrangement of A and B atoms whose A atoms are at the corner of the unit cell and B atoms are at the face centres. One of the A atom is missing from one corner in the unit cell. What will be the result our formula of the compound formed?