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प्रश्न
What is the main characteristic of the last element in each period of the periodic table?
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उत्तर
The last element in each period of the periodic table is a gaseous element with its valence shell completely filled. Except for helium, which has a complete duplet configuration, all five gases have a complete octet configuration.
संबंधित प्रश्न
The atomic numbers of four elements P, Q, R and S are 6, 8, 14 and 16 respectively. Out of these, the element known as metalloid is:
(a) P
(b) Q
(c) R
(d) S
Which element has two shells, both of which are completely filled with electrons?
State the modern periodic law for classification of elements. How many (i) groups and (ii) periods are there in the modern periodic table?
An element A has 2 electrons in its fourth shell. State its electronic configuration.
Name the cation and the anion in the salt – calcium sulphate
Write scientific reason.
Lithium and sodium are included in the same group in periodic table.
Elements in the modern periodic table are arranged in ______groups and______ periods.
______ is the longest period in the periodical table.
The longest period of the Modern Periodic Table is period.
Answer the following in respect of element \[\ce{_16^32S}\].
Give its electronic configuration.
