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प्रश्न
Name the non-metals in the first twenty elements.
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उत्तर
C, N, O, F, Ne, P, S, Cl, Ar, H and He.
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संबंधित प्रश्न
Nitrogen (atomic number 7) and phosphorus (atomic number 15) belong to group 15 of the Periodic Table. Write the electronic configuration of these two elements. Which of these will be more electronegative? Why?
How many rows and columns are there in the modern periodic table?
Name two elements in halogens.
Name the type of elements which have outermost shell complete.
What is the number of elements in the 1st period?
Give the chemical formula of carbonic acid
Position of A, B and C three elements is given in the table from the modern periodic table. Answer the following questions.
| Periods | Group 2 | Group 17 |
| 2 | ----- | A |
| 3 | B | ----- |
| 4 | ----- | C |
- What is an element metal or nonmetal?
- Which is the outermost orbit of element B?
- Identify C element and it's physical state.
On moving from left to right in a period in the periodic table, the size of the atom ______
If an element X is placed in group 14, what will be the formula and the nature of bonding of its chloride?
An element with atomic number ______ will form a basic oxide.
