Atomic Structure

Question 0

Atomic number is…?

Answer 0

Protons (and electrons)

Question 1

Mass number is..?

Answer 1

Protons + neutrons (top part)

Question 2

Isotopes

Answer 2

Same element with the same atomic atomic number but different mad number (neutrons)

Question 3

Mass spectrometer parts ?

Answer 3

Ionisation (sample bombarded with electrons)

Acceleration(cations accelerated)

Deflection( ions deflected through a magnetic field- depended on m/z)

Detection( ions hit detector - current produced)

Question 4

Relative atomic mass of isotopes

Answer 4

Total of abundance of isotopes

Question 5

Electronic configuration exceptions?

Answer 5

They want to fill d orbital and half fill the 4s orbital

Cu- 1s2 2s2 2p6 3s2 3p6 3d10 4s1
Cr - 1s2 2s2 2p6 3s2 3p6 3d5 4s1

Question 6

First ionisation energy

Answer 6

Energy required to convert 1 mole of gaseous atoms into 1 mole of gaseous cations, each atom losing an electron.

Question 7

Ionisation energy trend?

Answer 7

Increase across period (generally)

Drop between 2 and 3 due to electron from 3p orbital ( which is higher in energy) is removed

Drop between 5 and 6 due to paired repulsion

Question 8

First second and third ionisation energy half equation

Answer 8

Look them up need to know them