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प्रश्न
Right or wrong sentence.
The K and L shells of the elements Na and Mg contain electrons.
विकल्प
Right
Wrong
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उत्तर
The given sentence is right.
Explanation:
- Both sodium (Na) and magnesium (Mg) have electrons in their K and L shells; specifically, their K shells are filled with 2 electrons and their L shells are filled with 8 electrons.
- While they also have electrons in their M shells (1 and 2, respectively), it is factually accurate to state that the K and L shells contain electrons.
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संबंधित प्रश्न
Fill in the blank:
The modern periodic table consists of ……………. periods.
The position of three elements A, B and C in the Periodic Table are shown below –
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Group 16
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Group 17
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−
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A
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−
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B
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C
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(a) State whether A is a metal or non-metal.
(b) State whether C is more reactive or less reactive than A.
(c) Will C be larger or smaller in size than B?
(d) Which type of ion, cation or anion, will be formed by element A?
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Fill in the following blank with suitable word:
The basis for modern periodic table is ...............
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where should hydrogen be placed in the modern periodic table? Give reason for your answer.
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| Atomic number | 2 | 10 | 5 |
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It has same valency as Lithium.
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