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प्रश्न
An element with the atomic number 19 will most likely combine chemically with the element whose atomic number is ______.
विकल्प
17
11
28
20
उत्तर
An element with the atomic number 19 will most likely combine chemically with the element whose atomic number is 17.
Explanation:
The element with atomic number 19 will lose 1 electron to achieve the noble gas configuration which can be accepted by the element with atomic number 17.
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संबंधित प्रश्न
Fill in the blank:
The formulae of chloride of metal M is MCl2. The metal M belongs to ……………. group.
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.
Periodicity is observed due to the similar ______.
What do you understand by periodicity?
Name the element of lower nuclear charge out of Be and Mg.
What is modern periodic law?
How could the atomic radius of a noble gas be compared with the other elements in a period?
State the number of elements in period 1, period 2 and period 3 of the periodic table.
Name or state following with reference to the elements of the first three periods of the periodic table.
A metalloid in period 2 and in period 3.
State the following:
The group which contains highly electropositive metals including sodium.
