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प्रश्न
Which of the following elements will form an acidic oxide?
पर्याय
An element with atomic number 7
An element with atomic number 3
An element with atomic number 12
An element with atomic number 19
उत्तर
An element with atomic number 7
Explanation -
Non-metallic oxides are acidic in nature. Out of the given options, only the element with atomic number 7, i.e., nitrogen is a non-metal.
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संबंधित प्रश्न
Name the scientist who first of all showed that atomic number of an element is a more fundamental property than its atomic mass.
Fill in the following blank with suitable word:
Group 18 elements are called ...............
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Write the number of protons, neutrons and electronic configuration of \[\ce{_19^39K, _15^31P}\]. Also state their position in periodic table.
An element E has following electronic configuration:
|
K |
L |
M |
|
2 |
8 |
6 |
(a) To which group of the periodic table does element E belong?
(b) To which period of the periodic table does element E belong?
(c) State the number of valence electrons present in element E.
(d) State the valency of the element E.
Choose an element from period 3 of modern periodic table that matches the description given below in instance. Give a reason for your choice.
It has variable valency and is a member of the Oxygen family (group 16).
Noble gases are placed in the ______ group in the modern periodic table.
Explain the position of hydrogen in the periodic table.
1H2 is an isotope of hydrogen. In the modern Periodic Table it will ______.
Name the following metal:
A metal present in period 3, group 1 of the periodic table.
