Question

9 0/1 point consider the elements listed below: zirconium strontium tin silver silver has the strongest coulombic attraction. 10 0.333/1 point when comparing the coulombic attraction between gallium (ga) and aluminum (al), gallium has a stronger force of attraction between the valence electrons and the protons in the nucleus. this is because gallium s valence electrons are closer to the protons in the nucleus.

Explanation:

Step1: Coulombic attraction concept

Coulombic attraction is the attraction between oppositely - charged particles (valence electrons and protons in the nucleus). It is stronger when the electrons are closer to the nucleus and when there is a higher effective nuclear charge.

Step2: Analyze elements in question 9

Zirconium (Zr), Strontium (Sr), Tin (Sn), and Silver (Ag) are in the same period. As we move across a period from left to right, the effective nuclear charge increases and the atomic radius decreases. Tin is further to the right among these elements, so it has a higher effective nuclear charge and a smaller atomic radius, resulting in stronger coulombic attraction.

Step3: Analyze elements in question 10

Gallium (Ga) is in the fourth period and Aluminum (Al) is in the third period. Aluminum has fewer electron shells, so its valence electrons are in a shell closer to the nucleus compared to Gallium. So, Aluminum has a stronger coulombic attraction between its valence electrons and the protons in the nucleus.

Answer:

1. Question 9: Tin has the strongest coulombic attraction among Zirconium, Strontium, Tin, Silver.
2. Question 10: Aluminum has a stronger force of attraction between the valence - electrons and the protons in the nucleus. This is because Aluminum's valence electrons are closer to the protons in the nucleus.