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Question
Give a reason why elements are tabulated in a table called the ‘Periodic table’.
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Solution
For arranging all the elements in a systematic and simple manner. The arrangement of elements was done in the form of a table called Periodic Table in which elements are arranged in increasing order of their atomic numbers. Elements in the Periodic Table are arranged in Horizontal rows called Periods and vertical columns called groups. Metallic elements are placed on the left non-metallic on the right and noble gases on the extreme right of the Periodic table.
RELATED QUESTIONS
The scientist who proposed the first letter (or first letter and another letter) of the Latin or English name of
an element as its symbol, was :
State which element exists in the highest percentage in earth’s crust.
State the type of element for the following:
Sulphur
State the type of element for the following:
Silicon
Write the radical of the following valency:
Hydroxide
State whether the following ion or radical given below of a non-metallic element exhibits valency: 1–, 2– or 3–. (write the ion or radical with the correct valency).
Iodide
State whether the following ion or radical given below of a non-metallic element exhibits valency: 1–, 2– or 3–. (write the ion or radical with the correct valency).
Nitride
What is meant by the term ‘symbol’?
Which of the following symbols of elements are incorrect? Give their correct symbols
- Cobalt CO
- Carbon c
- Aluminium AL
- Helium He
- Sodium So
What is the expansion of IUPAC.
