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प्रश्न
The position of elements A, B, C, D and E in the periodic table are shown below:
|
Group 1 |
Group 2 |
Group 17 |
Group 18 |
|
|
|
|
D |
|
|
B |
C |
|
|
A |
|
|
E |
State which is metals, non-metals, and noble gas in this table.
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उत्तर
Metals: A and B; Non-metals: C; Noble gases: D and E
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संबंधित प्रश्न
Why are noble gases placed in a separate group?
What is its atomic number?
How does the number of:
valency vary on moving from left to right in the second period of the periodic table?
Which element has:
twice as many electrons in its second shell as in its first shell?
Give the number of the group and the period of elements having three shells with three electrons in valence shell.
Choose the most appropriate answer from the following list of oxides which fit the description.
A basic oxide.
Based on the group valency of element write the molecular formula of the following compound giving justification:
Oxide of first group elements.
Name or state following with reference to the element of the first three periods of the periodic table.
A metal in period 3 having valency 3.
Select the correct answer from the options given below.
It is a metal in period 2 having electronic configuration 2, 1?
Which of the following would weigh the least?
(Atomic masses C = 12, 0 = 16, Na = 23)
