M2S1 – Atomic Structure


246

Atomic Structure

1 / 10

The first five ionisation energies of an element in kJ/mol are: 419, 3051, 4412, 5877, 7975. The element is in:

 

2 / 10

How many p electrons are there in the outer shell of a halogen atom?

3 / 10

What is the electron configuration of sulfur?

4 / 10

Which one of the following is the electron configuration of a group 2 metal atom?

5 / 10

Analysis of a sample of potassium in a mass spectrometer shows that it consists of 93.2% potassium 39 and 6.8% potassium-41. What is the relative atomic mass of potassium?

6 / 10

E represents an atom of an element in the equation: E(g) -> E+(g) + e– Which of these statements is/are true:

(i) the element must be a metal

(ii) the enthalpy change for this process is the first ionisation energy of the element

(iii) the element must be a gas at room temperature.

(iv) this process occurs in a mass spectrometer used to analyse the element

7 / 10

The isotopes of an element have the same:

(i) relative atomic mass

(ii) atomic number

(iii) mass number

(iv) electron configuration.

8 / 10

The particle with 3 protons, 4 neutrons and 2 electrons is a:

9 / 10

How many electrons are there in an oxide ion?

10 / 10

How many neutrons are there in an atom of boron with mass number 9 and atomic number 4?

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