Question

Electronic configuration of a few elements are given ( symbols are not real )analyse them and fill the following table

Answer 1

Correct Question:

Electronic configuration of a few elements are given (symbols are not real). Analyse them

and answer the following:

P- 2,8,7

0-2,8,8

R-2,8, 1

• The period in which these elements belong-
• Biggest element-
• Element having the highest ionization energy-
• Element having the highest electro negativity-
• Stable element-

Solution:

• First of all, we will write the electronic configuration of all the elements:

P : 1s² 2s² 2p⁶ 3s² 3p⁵

Q : 1s² 2s² 2p⁶ 3s² 3p⁶

R : 1s² 2s² 2p⁶ 3s¹

Now, let's fill in the blanks:

• Since all the elements have the highest Principal Quantum Number as 3, the belong to PERIOD 3.

• Along a period, atomic radii decreases on going right. So biggest element is R (since it will be present in the left most part).

• Element having highest ionisation energy will be Q, because it is already stable in its octet state.

• Element P has highest electronegativity, because it will accept 1 electron to get octet.

• Q is the stable element, it already has octet.

$\star$ Hope It Helps.