Question
- Determine group and block of elements with atomic number 29 and 35.
- Define $\pi$ bonds.
✓
Answer
- $\text{Cu}(29):\text{ls}^2\ \text{2s}^2\ 2\text{p}^6\ 3\text{3s}^6\ \text{4s}^1\ \text{3d}^{10}$
It belongs to group 11, 4th period and d-block of periodic table.
$\text{Br}(35):\text{ls}^2\ \text{2s}^2\ 2\text{p}^6\ 3\text{s}^2\ 3\text{p}^6\ 4\text{s}^2\ 3\text{d}^{10}\ 4\text{P}^5$
It belongs to Group 17, 4th period and p-block of periodic table.
- $\pi-\text{bond:}$ It is formed by lateral or sideways overlapping of parallel p-orbital above and below the plane of inter nuclear axis.
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