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. Give the molecular formula of the compound formed between E and G and state the type of chemical bond in this compound.

Three elements X , Y and Z have atomic numbers 19 , 37 and 55 respectively . Then the correct statement (s) is / are

Atomic number of an element is 16. State Is the element a metal or a non-metal

The elements A, B, C, D and E have atomic number 9, 11, 17, 12 and 13 respectively. Which pair of elements belongs to the same group ?

Three elements 'X', 'Y' and 'Z' have atomic numbers 18, 19 and 20 respectively. How many electrons are present in the M shell of these elements?

Elements A, B and C have atomic numbers 9, 10 and 20 respectively. State which one is (i) a metal (ii) non-metal (iii) chemically inert. Explain the formation of bond between any two elements. Draw its orbital diagram. Name the type of bond.

In the table given below, six elements are shown with their atomic numbers given in parenthesis. State whether element B is non-metal or metal.

Four elements P, Q, R and S have atomic numbers 12, 13, 14 and 15 respectively. Answer the following questions giving reasons: (i) What is the valency of Q ? (ii) Classify these elements as metals and non-metals. (iii) Which of these elements will form the most basic oxide?

Element P has atomic number 19. To which group and period, does P belong? Is it a metal or a non- metal ? Why?

Elements A, B and C have atomic numbers 9, 20 and 10 respectively. State which one is : (i) a non-metal (ii) a metal (iii) chemically inert.