Advertisements
Advertisements
प्रश्न
What property forms the basis of identification?
Advertisements
उत्तर
Electronegativity
APPEARS IN
संबंधित प्रश्न
The following diagram shows a part of the periodic table containing first three periods in which five elements have been represented by the letters a, b, c, d and e (which are not their chemical symbols):
-
1 18 a 2 13 14 15 16 17 b c d e
(i) Select the letter which represents an alkali metal.
(ii) Select the letter which represents a nobles gas.
(iii) Select the letter which represents a halogen.
(iv) What type of bond is formed between a and e?
(v) What type of bond is formed between d and e?
The elements Li, Na and K, each having one valence electron, are in period 2, 3 and 4 respectively of modern periodic table.
(i) In which group of the periodic table should they be ?
(ii) Which one of them is least reactive ?
(iii) Which one of them has the largest atomic radius ? Give reason in justify your answer in each case.
The number of electrons in the outermost shell of alkali metals is ______.
Elements belonging to the same group have the same valency.
Classify the following elements into Metals and Nonmetals.
S, Mg, Al, P, N, Na.
Consider the following elements 20Ca, 8Or 18Ar, 16S, 4Be, 2He
Which of the above elements would you expect to be in group 16 of the Periodic Table?
The elements of group 16 are called ______
Which of the following property will be common in group 1 elements?
Element ‘A’ has electronic configuration 2, 7; ‘B’ has electronic configuration 2, 8, 5 and ‘C’ has electronic configuration 2, 8, 7. Which two elements will exhibit similar chemical properties?
Complete the following triads by inserting the missing elements.
Cl, ______, I
