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प्रश्न
Select the correct answer
Identify the metalloid
विकल्प
N
P
Bi
Sb
उत्तर
Sb
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संबंधित प्रश्न
Fill in the blank in the following statement:
On moving form right to left in the second period, the number of valency electrons ...............
How do atomic structures (electron arrangements) change in a period with increase in atomic numbers from left to right?
How does Chemical reactivity of elements change on going from left to right in a period of the periodic table?
Give example in support of your answer.
The element which has the maximum number of valence electrons is:
(a) Na
(b) P
(c) Si
(d) A
Complete the following sentences
The similarities in the properties of a group of elements are because they have the same …………………
Arrange the following in increasing order of property indicated
SiO2, P2O5, SO3, Cl2O7 (acidic nature)
State the number of elements in period 1, period 2 and period 3 of the periodic table.
The position of certain elements in the Modern Periodic Table is shown below:
Using the above table answer the following questions giving reasons in each case :
(i) Which element will form only covalent compounds?
(ii) Which element is a non-metal with valency 2?
(iii) Which element is a metal with valency 2?
(iv) Out of H, C, and F which has the largest atomic size?
(v) To which family does H, C, and F belong?
Name or state following with reference to the element of the first three periods of the periodic table.
The valency of elements in group 1 [I–A].
Chlorine in the Periodic Table is surrounded by the elements with atomic number 9, 16, 18 and 35.
Which of these have Physical and Chemical properties resembling chlorine?
