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प्रश्न
Atomic number of an element is 16. State
- the period to which it belongs
- the number of valence electrons
- whether it is a metal or non-metal
उत्तर
Atomic number of an element is 16.
- It belongs to 3rd period.
- Number of valence electrons in the element is 6.
- The element is a non-metal.
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संबंधित प्रश्न
Based on the group valency of elements state the formula lot the following giving justification for each :-
(i) Oxides of 1st group elements,
(ii) Halides of the elements of group 13, and
(iii) Compounds formed when an element of group 2 combines with, an element of group 16.
In the following set of elements, one element does not belong to the set. Select this element and state why it does not belong:
Oxygen, Nitrogen, Carbon, Chlorine, Fluorine
Fill in the blank in the following statement:
On moving form right to left in the second period, the number of valency electrons ...............
How does Nature of oxides of elements change on going from left to right in a period of the periodic table?
Give examples in support of your answer.
Select the correct answer
Most reactive character among the elements given below is found in
The following questions refer to the Periodic Table.
What is the common feature of the electronic configurations of the elements in group 7?
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].
Name or state following with reference to the element of the first three periods of the periodic table.
The non-metallic element present in period 3 other than sulphur and chlorine.
Name or state following with reference to the element of the first three periods of the periodic table.
The valency of the element in period 3 having atomic number 17.
