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प्रश्न
Fill in the following blank with suitable word:
The horizontal rows in a periodic table are called ...............
उत्तर
The horizontal rows in a periodic table are called periods.
संबंधित प्रश्न
What is the name of those elements which divide metals and non-metals in the periodic table?
Explain why All the elements of a group have similar chemical properties.
Name the scientist who stated the modern periodic law.
Give the symbol and valency of the following element and radical.
Bisulphate
Which of the following statements about the Modern Periodic Table is correct:
Which of the given elements A, B, C, D and E with atomic number 2, 3, 7, 10 and 30 respectively belong to the same period?
Which one of the following elements exhibit maximum number of valence electrons?
An element X which is a yellow solid at room temperature shows catenation and allotropy. X forms two oxides which are also formed during the thermal decomposition of ferrous sulphate crystals and are the major air pollutants.
- Identify the element X
- Write the electronic configuration of X
- Write the balanced chemical equation for the thermal decomposition of ferrous sulphate crystals?
- What would be the nature (acidic/ basic) of oxides formed?
- Locate the position of the element in the Modern Periodic Table.
Define periods of modern periodic table.
Name the metalloids in the first twenty elements.
