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प्रश्न
Name the type of elements which have outermost shell incomplete.
उत्तर
Representative elements
संबंधित प्रश्न
Fill in the following blank with suitable word:
Group 17 elements are known as ...............
What is the number of elements is 1st period the modern periodic table?
Name the type of elements which have outermost shell complete.
Name an alkali metal in period 3 and halogen in period 2.
What are the elements.
Write scientific reason.
There was ambiguity about the correct position of hydrogen in Mendeleev’s periodic table.
Explain structure of modern periodic table in short.
The element with atomic number 14 is hard and forms acidic oxide and a covalent halide. To which of the following categories does the element belong?
Compare the radii of two species X and Y. Give reasons for your answer.
- X has 12 protons and 12 electrons
- Y has 12 protons and 10 electrons
Name the metalloids in the first twenty elements.
