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प्रश्न
Give the chemical formula of sodium hydroxide
उत्तर
It denotes in a compound, the number of atoms of element present.
∴ Formula = \[\ce{NaOH}\]
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संबंधित प्रश्न
Fill in the blank:
The modern periodic table consists of ……………. periods.
The position of three elements A, B and C in the Periodic Table are shown below –
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Group 16
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Group 17
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−
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−
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−
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A
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−
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−
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B
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C
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(a) State whether A is a metal or non-metal.
(b) State whether C is more reactive or less reactive than A.
(c) Will C be larger or smaller in size than B?
(d) Which type of ion, cation or anion, will be formed by element A?
Compare and contrast the arrangement of elements in Mendeleev’s periodic Table and the Modern Periodic Table.
The modern periodic table was prepared by ______.
What happens to the number of valence electrons in the atoms of elements as we go down in a group of the periodic table?
Give the chemical formula of sodium sulphite
State the number of elements in Period 2 of the Periodic Table.
How does the property vary in periods and in groups?
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?
Spot the error:
There are 5 periods and 17 groups in the modern periodic table.
