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प्रश्न
An element barium has atomic number 56. Look up its position in the periodic table and answer the following question.
What is its valency?
उत्तर १
It needs to lose its 2 valence electrons to complete its octet configuration; therefore its valency is also 2.
उत्तर २
Valency is +2
संबंधित प्रश्न
Name the element which has a total of three shells with five electrons in its valence shell?
Name the element which has a total of four shells with two electrons in its valence shell?
Name the element of period 3 with valency 4.
Explain why the following statement is not correct:
Atoms of elements in the same group have the same number of electron(s).
Write scientific reason.
Elements belonging to the same group have the same valency.
On moving down a group, the number of valence electrons ______.
How does number of valence electrons vary on moving from left to right in the third period of a periodic table?
An element ‘A’ belongs to the third period and group 16 of the Periodic Table. Find out the valency of A.
Elements of group 1 and elements of group 17 both have valency 1. Explain.
Match the atomic number with the following:
A gaseous element with valency 2.
