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प्रश्न
In the Modern Periodic Table, which are the metals among the first ten elements?
उत्तर
Among the first ten elements, lithium (Li) and beryllium (Be) are metals.
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संबंधित प्रश्न
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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A
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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?
State how the valency of elements varies in a group of the periodic table?
What are the advantages of the periodic table?
Name the noble gas with 3 shells.
Write a short note.
Structure of the modern periodic table.
What is the number of elements in the 1st period?
Give the symbol and valency of the following element and radical.
Zinc
Give the symbol and valency of the following element and radical.
Bisulphate
What are the elements.
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.
