Question

1. Write the electronic arrangement whose atomic number is 12. Also write the valence electron and is it metal or non metal.
2. How many valence electrons in the following:
A. 2,8,9,0
B. 2,5,0,0
C. 2,8,3,0
D. 2,7,0,0
E. 2,8,7,0
F. 2,1,0,0
3. What is the arrangement of electrons whose atomic number is 17. Also write the number of electrons and protons. Also write is it metal or non metal.​

Answer 1

Answer:

1. Atomic no. 12 (Mg)

1. Atomic no. 12 (Mg) electronic arrangement = 2,8,2

2 .It is a metal 2. Number of valence electrons in each:❓❓❓❓

3. arrangement of electrons = 2,8,7 It is a non- metal ( cl)

Give heart ❤️

Answer 2

Answer:

up one is right answer please mark me as brainliest