There are three elements E, F, G with atomic numbers 19, 8 and 17 respectively.
Give the molecular formula of the compound formed between E and G and state the type of chemical bond in this compound.

There are three elements E, F, G with atomic numbers 19, 8 and 17 respectively. Classify the elements as metals and non metals.

There are three elements E, F, G with atomic numbers 19, 8 and 17 respectively. Classify the elements as metals and non- metals.

Elements A, B and C have atomic numbers 9, 20 and 10 respectively. Write down the formula of the compound formed by two of the above elements.

(a) List two limitations of Newlands' Law of Octaves. (b) Write the electronic configuration of two elements A and B whose atomic numbers are 20 and 17 respectively. Write the molecular formula of the compound formed when element A reacts with element B. State whether this compound is acidic, basic or neutral. Give reason to justify your answer.

Suppose that there are three atoms A, B, C and their oxidation number are 6,-1,-2 , respectively. Then the molecular formula of compound will be.

Five atoms are labelled from A to E Write down the formula of the compound formed between C and D.

Elements X,Y and Z have 4,5 and 7 valence electrons respectively, (i) Write the molecular formula of the compounds formed by these elements individually with hydrogen (ii) which of these compounds will have the highest dipolw moment ?

Elements X,Y and Z have 4,5 and 7 valence electrons respectively, (i) Write the molecular formula of the compounds formed by these elements individually with hydrogen (ii) which of these compounds will have the highest dipole moment ?

Elements with atomic numbers 17 and 20 form compounds with hydrogen. Write the formula of these two compounds and compare their chemical behaviour in water.