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प्रश्न
An element A has 2 electrons in its fourth shell. State:
position in the periodic table
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उत्तर
Position in the periodic table is group 2 period 4
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संबंधित प्रश्न
An element 'M' with electronic configuration (2, 8, 2) combines separately with (NO3)–, (SO4)2– and (PO4)3– radicals. Write the formula of the three compounds so formed. To which group and period of the Modern Periodic Table does the element 'M' belong? Will 'M' form covalent or ionic compounds? Give reason to justify your answer.
Define the term : Valency
Which of the following set of elements is written correctly in the order of their increasing metallic character?
(a) Mg, Al, Si
(b) C, O, N
(c) Na, Li, K
(d) Be, Mg, Ca
An element barium has atomic number 56. Look up its position in the periodic table and answer the following question.
Is it more or less reactive than calcium?
Fill in the blank
There are ______ groups and ______ periods in the modern form of periodic table.
Select the correct answer
Identify the metalloid
Give the number of the group and the period of elements having three shells with three electrons in valence shell.
An element belongs to the third period and Group IIIA (13) of the periodic table. State: the number of valence electrons,
An element A has 2 electrons in its fourth shell. State:
is it a metal or non-metal
Select the correct answer from the options given below.
Is the group number of the element whose atomic number is 4.
