Identify the group and valency of the element having atomic number 119. Alsopredict the outermost electronic configuration and write the general formulaof its oxide
Question
Identify the group and valency of the element having atomic number 119. Alsopredict the outermost electronic configuration and write the general formulaof its oxide
Solution
The element with atomic number 119 is not yet discovered and does not exist on the periodic table. However, if it were to exist, it would belong to the 1st group (alkali metals) of the 8th period according to the periodic law.
The valency of alkali metals is +1, so this hypothetical element would also have a valency of +1.
The electronic configuration of an element is determined by the Aufbau principle, Hund's rule and Pauli's exclusion principle. The last electron enters the s-orbital, so the outermost electronic configuration would be 8s1.
The general formula of an oxide is determined by the valency of the element. Since the valency of this element is +1 and oxygen has a valency of -2, the formula of its oxide would be E2O, where E represents the element.
Similar Questions
Write the full electron configuration and the valence shell electron configuration ofthe element vanadium.
Give the group number and general valence electron configuration of an element corresponding to each electron-dot symbol:Part 1 of 2XGroup number: Valence electron configuration: ns
Identify the period and group of the element having outer electronic configuration as(i) ns2np4for n = 3(ii) (n – 1) d2ns2for n = 4 and(iii) (n – 2) f 7(n 1) d1ns2for n = 6 in the periodic table.
The valence electronic configuration of an atom is 6s2. It d orbital of the penultimate shell contains two unpaired electrons, calculate the atomic number.
Below you are given the drawn electronic structure of an element.Identify which element has this electronic structure.You can use the following nuclear symbols to help you.
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.