Question

1. Write down the dectronic configuration of the following elements from the given atomic numbers.
Answer the following question with explanation.
15 P 17cl 1.Si. 2Mg. Which of these has largest atoms?

Answer 1

Answer:

1. Phosphorus

atomic number = 15

electronic configuration = 1s²,2s²,2p⁶,3s²,3p³.

2. Chlorine

atomic number = 17

electronic configuration = 1s²,2s²,2p⁶,3s²,3p⁵

3. Silicon

atomic number = 14

electronic configuration = 1s²,2s²,2p⁶,3s²,3p²

4. Magnesium

atomic number = 12

electronic configuration = 1s²,2s²,2p⁶,3s²

Chlorine has largest atom.