Atomic Structure

Question 1

Atomic number

Answer 1

The number of protons in the nucleus of an atom. The number of protons equals the number of electrons in a neutral atom

Question 2

Mass number

Answer 2

The sum of the number of protons and the number of neutrons in the nucleus of an atom.

Question 3

Number of neutrons

Answer 3

Mass number - Atomic number

Question 4

Isotope

Answer 4

Atoms of the same element with the same atomic number, but different mass numbers

Question 5

Isotope properties

Answer 5

Same chemical properties, different physical properties

Question 6

5 stages of the mass spectrometer

Answer 6

vaporization, ionization, acceleration, deflection, detection

Question 7

Relative atomic mass

Answer 7

The ratio of the average mass of one atom of an element to one-twelfth of the mass of an atom of carbon-12

Question 8

Calculate Relative atomic mass

Answer 8

Ar = (Ir × %)/100

Question 9

Energy Level

Answer 9

s,p,d,f

Question 10

Copper electron configuration

Answer 10

1s2,2s2,2p6,3s2,3p6,3d5,4s1

Question 11

Chromium

Answer 11

1s2, 2s2, 2p6, 3s2. 3p6, 3d10, 4s1

Question 12

How many electrons are in an orbital

Answer 12

2

Question 13

First ionization energy

Answer 13

The energy required to remove one electron from each atom in a mole of gaseous atoms.

Question 14

Representation of ionization energy

Answer 14

X(g) → X+ + e-