Atomic Structure

1) How many electrons in an atom of helium?

2) How many protons in an atom of lithium? How many electrons?

3) What’s the mass of an atom of beryllium, in atomic mass units (amu)?

4) What is the atomic number for boron? What is its atomic mass?

5) What is the chemical symbol for carbon? How many protons does one atom contain?

6) Which element has the atomic number 7? How many protons does it have?

7) What is the name of the element with atomic mass 24.3 amu? How many electrons does it have?

8) What is the chemical symbol for the element with atomic number 19? How many protons does it have?

How many electrons?

9) What is the name of the element with the chemical symbol I? What is its atomic mass? What is its mass

number?

10) How many protons in the element with 14 electrons? What is its name? What is its atomic mass?

11) What is the atomic number for the element with 29 protons? What is its symbol?

12) What is the atomic mass of manganese? What is its mass number?

13) How many protons in an atom of tin?

14) What is the atomic number of the element with a mass of 55.9 amu? What is its name?

15) What is the mass of the element with 47 electrons?