Answer to Question #346794 in General Chemistry for claire

Question

1. Which pair of valence electron configuration represent two elements with similar chemical properties? a.1s²,3s² b.1s²,2s²2p¹ c.2s²,2s²2p⁶ d.2s²2p¹,2s²2p²

2. Which energy level within a group represents the biggest cationic size? a.n=1 b.n=2 c.n=3 d.n=4

3. What are the possible values of the magnetic quantum number? a.n b.0 to n-1 c.-l to +l d.+1/2, -1/2

Answer 1

1.

The chemical properties of the elements in a group are similar, and the number of electrons in the outer electron shell is equal. 

so the answer is: A. 1s² and 3s²

2.

For ions of the same charge (e.g. in the same group) the size increases as we go down a group in the periodic table.

So, Answer: D. n=4

3.

magnetic quantum number takes the values ​​of the orbital (l) quantum number from negative to positive

Answer: C. -l to +l