3. How both gerade and ungerade are take place in mot of 1s2. Because in 1s2 there is only two atoms or orbital

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Q. Three atoms have the following electron configurations respectively:
(i)

{1 s}^{2} {2 s}^{2} {2 p}^{6} {3 s}^{2} {3 p}^{1}

(ii)

{1 s}^{2} {2 s}^{2} {2 p}^{6} {3 s}^{2} {3 p}^{5}

(iii)

{1 s}^{2} {2 s}^{2} {2 p}^{6} {3 s}^{2} {3 p}^{6} {4 s}^{1}

(a) Which of the three has the largest

{(I E)}_{1}

?
(b) Which has the largest

{(I E)}_{4}

?
Write your answer as a two digit number.
Ex - If answer for a & b is 3 & 2 respectively, answer as 32.

Q. I: An element that has the electron configuration

{1 s}^{2} {2 s}^{2} {2 p}^{6} {3 s}^{2} {3 p}^{6} {3 d}^{3} {4 s}^{2}

is a transition element.
II: In atoms of transition elements, the 1s, 2s, 2p, 3s and 3p orbitals are completely filled in the ground state.

Q. The atomic number of element with electronic configuration:

{1 s}^{2} {2 s}^{2} {2 p}^{3}

is:

Q. Does radioactive discharge take place only on unstable atoms? If so, then are our atoms unstable because we are also radioactive?

If there exists electropositive or electronegative charge in the carbon atoms of diamond, where all the valencies of one carbon atoms are fulfilled by another carbon atom only, how the atoms stay in place?

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