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प्रश्न
How many elements are there in period 2?
उत्तर
There are 8 elements in period 2.
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संबंधित प्रश्न
Which element has twice as many electrons in its second shell as in its first shell?
Use the letters only written in the Periodic Table given below to answer the questions that Follow :
1) State the number of valence electrons in atom J.
2) Which element shown forms ions with a single negative charge?
3)Which metallic element is more reactive than R?
4) Which element has its electrons arranged in four shells?
Arrange the following elements in increasing order of their atomic radii:
Li, Be, F, N
Rewrite the following statement after correction, if necessary:
Elements in the same period have equal valency
How does the size of atoms (atomic size) generally vary in going from left to right in a period of the periodic table? Why does it vary this way?
Which element has:
twice as many electrons in its second shell as in its first shell?
Chorine in the periodic table is surrounded by the elements with atomic number 9, 16, 18 and 35.
Which of these have physical and chemical properties resembling chlorine.
Fill in the blank
Most electropositive elements belong to ______ group.
Fill in the blank and rewrite the completed statement:
________ group in the periodic table contains elements that are all gases at room temperature.
Answer the following question:
State the four blocks of the modern periodic table based on the electronic configuration of elements.
