Identify the group and valency of the element having atomic number 119. Also, predict the outermost electronic configuration and write the general formula of its oxide.

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Solution

The Aufbau principle states that lower energy orbitals gets filled before higher energy orbitals.

So, for an element with atomic number 119:

Group: 1

Valency: 1

Outermost electronic configuration $= [O g] 8 s^{1}$

$∵$ M has +1 charge and O has -2 charge in ionic forms

$∴$ The formula of oxide will be $M_{2} O$ .

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Identify the group and valency of the element having atomic number 119. Also, predict the outermost electronic configuration and write the general formula of its oxide.

The Aufbau principle states that lower energy orbitals gets filled before higher energy orbitals. So, for an element with atomic number 119: Group: 1 Valency: 1 Outermost electronic configuration =[Og]8s1 ∵ M has +1 charge and O has -2 charge in ionic forms ∴ The formula of oxide will be M2O.