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प्रश्न
State whether the following statement is true or false:
On going down in a group of the periodic table, the number of valence electrons increases.
उत्तर
False
On going down in a group of the periodic table, the number of valence electrons remains the same.
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संबंधित प्रश्न
Why do all the elements of the same group have similar properties?
Fill in the following blank with suitable word:
The basis for modern periodic table is ...............
What is a group in the periodic table?
An element X belongs to 3rd period and group 2 of the periodic table. State:
(a) number of valence electrons
(b) valency
(c) metal or non-metal
(d) name of the element
Give the symbol and valency of the following element and radical.
Bisulphate
The modern periodic table shows the molecular masses of the elements in each frame.
In the modern periodic table, elements are arranged according to their ______
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?
Choose an element from period 3 of modern periodic table that matches the description given below in instance. Give a reason for your choice.
It has same valency as Lithium.
- Write the electronic configuration of element X, given by its symbol as under: \[\ce{^40_20 X}\]
- Determine its position in the modem periodic table.
- What is the nature of its oxide?
- Name one other element of its group.
