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प्रश्न
State the number of elements in Period 3 of the Periodic Table.
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उत्तर
Period 3 is a short period that has 8 elements.
संबंधित प्रश्न
Fill in the following blank with suitable word:
The horizontal rows in a periodic table are called ...............
Give two example of group 17 elements.
Give two example of group 18 elements.
Name two elements in each case: Lanthanides
What is the main characteristic of the last element in each period of the periodic table?
Two elements P and Q belong to the same period of the modern periodic table and are in group 1 and group 2, respectively. Compare the following characteristics in the tabular form.
- Number of electrons in their atoms
- Their tendency to lose electrons
- Their metallic characters
- Formation of their oxides
- Formulae of their chlorides
Give the chemical formula of calcium phosphate
Noble gases belong to______ group of the periodic table.
Which of these belong to the same period?
| Element | A | B | C |
| Atomic number | 2 | 10 | 5 |
“Hydrogen occupies a unique position in Modern Periodic Table”. Justify the statement.
