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प्रश्न
What happens to the number of valence electrons in the atoms of elements as we go down in a group of the periodic table?
उत्तर
On moving down in a group of the periodic table, the number of valence electrons in the atoms of elements remains the same.
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संबंधित प्रश्न
Why do all the elements of the same group have similar properties?
Explain why All the elements of a group have similar chemical properties.
State how the valency of elements varies in a period of the periodic table?
The electronic configuration of an element T is 2, 8, 8, 1.
What is the period number of T?
What is the number of elements in the 3rd period, of the modern periodic table?
Give the symbol and valency of the following element and radical.
Bicarbonate
Give the symbol and valency of the following element and radical.
Sulphite
Give the chemical formula of sodium nitrate
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.
______ group elements are called alkaline earth metals.
