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प्रश्न
Rewrite the following statement after correction, if necessary:
Elements in the same period have equal valency
उत्तर
Elements in the same group have equal valency.
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संबंधित प्रश्न
The elements Be, Mg and Ca each having two electrons in their outermost shells are in periods 2, 3, and 4 respectively of the modern periodic table. Answer the following questions, giving justification in each case:-
(i) Write the group to which these elements belong.
(ii) Name the least reactive element.
(iii) Name the element having largest atomic radius.
An element with the atomic number 19 will most likely combine chemically with the element whose atomic number is ______.
How does the electropositive character of elements change on going down in a group of the periodic table?
How does Chemical reactivity of elements change on going from left to right in a period of the periodic table?
Give example in support of your answer.
The element which has the maximum number of valence electrons is:
(a) Na
(b) P
(c) Si
(d) A
What do you understand by orbits?
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?
Name the element in period 3 which does not form oxide.
How many groups and periods are there in the modern periodic table?
Name or state following with reference to the element of the first three periods of the periodic table.
A metal in period 3 having valency 3.
