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प्रश्न
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.
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उत्तर
Valency is 1 negative [−1]
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संबंधित प्रश्न
Write the number of horizontal rows in the modern periodic table. What are these rows called?
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Oxygen, Nitrogen, Carbon, Chlorine, Fluorine
State one reason for keeping fluorine and chlorine in the same of the periodic table.
Complete the following sentences.
The properties of the elements are a periodic function of their …………… (atomic number, mass number, reative atomic mass).
K, Pb, Ca, Zn (In the increasing order of the reactivity)
How many groups and periods are there in the modern periodic table?
The elements of one short period of the periodic table are given below in order from left to right:
| Li | Be | B | C | O | F | Ne |
Which one of the above elements belongs to the halogen series?
Name and state the following with reference to the elements of the first three periods of the periodic table.
Metalloid in Period 3.
State the following:
The group which contains highly electropositive metals including sodium.
Electron Affinity is maximum in ______.
