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प्रश्न
Atomic number of an element is 16. State
- the period to which it belongs
- the number of valence electrons
- whether it is a metal or non-metal
उत्तर
Atomic number of an element is 16.
- It belongs to 3rd period.
- Number of valence electrons in the element is 6.
- The element is a non-metal.
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संबंधित प्रश्न
Write the electronic configuration of K and Ne.
Define the term : Valency
The electronic configuration of the atom of an element X is 2, 8, 4. In modern periodic table, the element X is places in :
(a) 2nd group
(b) 4th group
(c) 14th group
(d) 8th group
Which of the following element does not lose an electron easily?
(a) Na
(b) F
(c) Mg
(d) Al
An element 'M' has atomic number 12.
(a) Write its electronic configuration.
(b) State the group to which 'M' belongs.
(c) Is 'M' a metal or a non-metal.
(d) Write the formula of its chloride.
What is meant by periodicity of elements?
State whether the following statement is true or false
On moving horizontally across a period, number of valence electrons increases from one to eight.
Arrange the following as per instruction given in the bracket.
K, Pb, Ca, Zn (increasing reactivity)
Fill in the blank and rewrite the completed statement:
________ group in the periodic table contains elements that are all gases at room temperature.
Based on the group valency of element write the molecular formula of the following compound giving justification:
Halide of the elements of group thirteen
