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प्रश्न
An element A has 2 electrons in its fourth shell. State:
is it a metal or non-metal
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उत्तर
It's a metal.
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संबंधित प्रश्न
Write the number of horizontal rows in the modern periodic table. What are these rows called?
Calculate the number of gram atoms in 4.6 grams of sodium (Na = 23)
Choose the most appropriate answer of the following:
Which of the following would weigh the least?
(A) 2-gram atoms of Nitrogen.
(B) 1mole of Silver
(C) 22.4 liters of oxygen gas at 1 atmospheric pressure and 273K
(D) 6.02 x 1023 atoms of carbon.
[Atomic masses: Ag=108, N=14, O=16, C=12]
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
Why do elements in the same group show similar properties but the elements in different groups show different properties?
The correct increasing order of the atomic radii of the elements oxygen, fluorine and nitrogen is:
(a) O, F, N
(b) N, F, O
(c) O, N, F
(d) F, O, N
Periodicity is observed due to the similar ______.
An element X belong to 4th period and 17th group, state.
name the family to which it belong.
Fill in the blank
There are ______ groups and ______ periods in the modern form of periodic table.
Name or state following with reference to the element of the first three periods of the periodic table.
A non-metal in period 2 having electronic configuration 2, 6.
