Phosphorus Consider the Element Phosphorus,which Has an Atomic Mass of 30,and

question 40

Multiple Choice

Phosphorus
Consider the element phosphorus,which has an atomic mass of 30,and answer the following question(s) .
-Boron has an atomic number of 5.How many vacancies does boron have in its outer shell?

• A) 1
• B) 2
• C) 3
• D) 4
• E) 5

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