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प्रश्न
In which block of the modern periodic table are the nonmetals found?
पर्याय
s-block
p-block
d-block
f-block
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उत्तर
In p-block of the modern periodic table are the nonmetals found.
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संबंधित प्रश्न
Rewrite the following statement after correction, if necessary:
Periods are the horizontal rows of elements.
Rewrite the following statement after correction, if necessary:
Isotopes are the elements of the same group.
The element which forms a basis oxide has the atomic number of:
(a) 18
(b) 17
(c) 14
(d) 19
An element X combines with oxygen to form an oxide XO. This oxide is electrically conducting.
(a) How many electrons would be there in the outermost shell of the element X?
(b) To which group of the periodic tables does the element X belong?
(c) Write the formula of the compound formed when X reacts with chlorine.
The non-metal A is an important constituent of our food and most of the fuels around us. A forms two oxides B and C. The oxide B is poisonous whereas oxide C causes global warming.
(a) Identify A, B and C.
(b) To which group of periodic table does A belong?
(c) Name another element which is placed in the same group as A.
A non-metal X which is the largest constituent of air combines with hydrogen when heated in the presence of iron as catalyst to form a gas Y. When gas Y is treated with sulphuric acid, it forms a compound Z which is used as a chemical fertiliser.
(a) What are X, Y and Z?
(b) To which group of periodic table does X belong?
(c) Name the periodic table in which X is placed.
(d) Which element is placed just before X in the period?
(e) Which element is placed just after X in the period?
Give a reason why elements need to be properly classified.
How did the early chemists classify elements?
Why was this basis of classification discarded for future classification of elements?
Classify the following elements into Metals and Nonmetals.
S, Mg, Al, P, N, Na.
If the distance between two Cl atoms in a Cl2 molecule is 1.98Å, then the radius of the Cl atom is ______.
Moseley’s periodic table is based on atomic mass.
What is the atomic number of elements of period 3 and group 17 of the Periodic Table?
Which one of the following statements is not correct about the trends in the properties of the elements of a period on going from left to right?
The elements A, B, and C belong to groups 1, 14, and 17 respectively of the Periodic Table. Which two elements will form ionic compounds?
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 element with atomic number 26 will be found in group ______
What type of oxide would Eka– aluminium form?
Complete the following triads by inserting the missing elements.
Li, ______, K
The atomic number of an element 'X' is 11.
- Write the electronic configuration of X and find its valency.
- Write the formula and nature of its oxide.
