Question

what is wrong with the following orbital spin diagram? 1s ↑↑ one arrow should be in the 1s and one arrow should be in the 1p. one arrow should be pointing up and one arrow should be pointing down. the 1s has two orbitals so one arrow should be in the first 1s orbital and the other arrow should be in the second 1s orbital. both arrows should be pointing down, not up. question 4 10 pts which of the following symbols would correctly replace the x in the following lewis dot structure? :x: potassium, k aluminum, al zinc, zn phosphorus, p question 5 10 pts which of the following elements would have three valence electrons? calcium, ca copper, cu gallium, ga sulfur, s

Explanation:

Question 3:

The 1s orbital can hold a maximum of 2 electrons with opposite spins according to the Pauli - exclusion principle. In the given 1s orbital spin diagram, both electrons have the same spin (both arrows up), which is incorrect. One arrow should point up and one should point down.

Question 4:

The Lewis - dot structure shows 5 valence electrons. Phosphorus (P) has 5 valence electrons. Potassium (K) has 1, Aluminum (Al) has 3, and Zinc (Zn) has 2 valence electrons.

Question 5:

Calcium (Ca) has 2 valence electrons, Copper (Cu) has 1 (in its most common oxidation state), Gallium (Ga) has 3 valence electrons as it is in group 13 of the periodic table, and Sulfur (S) has 6 valence electrons.

Answer:

Question 3: One arrow should be pointing up and one arrow should be pointing down.
Question 4: Phosphorus, P
Question 5: Gallium, Ga