1. The element phosphorus (P, Group 5A) is located to the right of the element magne member in the same period in the periodic table. Which statement is TRUE? A. Magnesium has a larger atomic number. B. Phosphorus has a larger atomic mass but has the same number of Energy levels. C. Magnesium &phosphorus have the same number of valence electrons. D. Magnesium &phosphorus are isotopes. 2. Elements in group 2A are all called alkaline earth metals.. What is most similar a metals? A. How many protons and neutrons do they have? B. How many valence electrons do they have? C. How many total electrons do they have? D. Which period are they most often found in? his is how zirconium appears in the periodic table. Rounded the average atomic mass to the nearest whole numb number/atomic mass, how many electrons are in an atom of A. 40 B. 51

Question

1. The element phosphorus (P, Group 5A) is located to the right of the element magne member in the same period in the periodic table. Which statement is TRUE? A. Magnesium has a larger atomic number. B. Phosphorus has a larger atomic mass but has the same number of Energy levels. C. Magnesium &phosphorus have the same number of valence electrons. D. Magnesium &phosphorus are isotopes. 2. Elements in group 2A are all called alkaline earth metals.. What is most similar a metals? A. How many protons and neutrons do they have? B. How many valence electrons do they have? C. How many total electrons do they have? D. Which period are they most often found in? his is how zirconium appears in the periodic table. Rounded the average atomic mass to the nearest whole numb number/atomic mass, how many electrons are in an atom of A. 40 B. 51

Answer 1

1. B. Phosphorus has a larger atomic mass but has the same number of Energy levels.2. B. How many valence electrons do they have?3. A. 40

Answer 2

1. Phosphorus (P) has a larger atomic mass than magnesium (Mg) and they are in the same period, thus they have the same number of energy levels.2. Elements in Group 2A (alkaline earth metals) have the same number of valence electrons, which is 2.3. The atomic number of zirconium (Zr) is 40, which equals the number of electrons in a neutral atom.

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