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प्रश्न
Rewrite the following statement after correction, if necessary:
The metallic character of elements in a period increases gradually on moving from left to right.
उत्तर
The metallic character of the elements in a period decreases gradually on moving from left to right.
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संबंधित प्रश्न
Write the number of vertical columns in the modern periodic table. What are these columns called?
Consider two elements 'A' (Atomic number 17) and 'B' (Atomic number 19) :
(i) Write the positions of these elements in the modern periodic table giving justification.
(ii) Write the formula of the compound formed when 'A' combines with 'B.'
(iii) Draw the electron dot structure of the compound and state the nature of the bond formed between the two elements.
Name the element that has two shells, both of which are completely filled with electrons.
Arrange the following elements in the increasing order of their metallic character:
Mg, Ca, K, Ga
Rewrite the following statement after correction, if necessary:
Elements in the same period have equal valency
An element barium has atomic number 56. Look up its position in the periodic table and answer the following question.
Is it more or less reactive than calcium?
Select the correct answer
Most reactive character among the elements given below is found in
An element A has 2 electrons in its fourth shell. State:
its valency
State the following:
The group which contains highly electropositive metals including sodium.
Match the option A and B with the statements (i) and (ii):
| A. metal | (i) The metal that forms two types of ion. |
| B. iron | (ii) An element with electronic configuration 2, 8, 8, 3. |
