Atomic structure

Question 1

Relative mass of Electon

Answer 1

1/1840

Question 1

What is the Equation of the angle of deflection of subatomic particles in an electric field?

for calculation, approach should be: angle1/angle2=(charge/mass)1/(charge/mass)2

Answer 1

Angle of deflection (is directly proportional to) charge/mass

Question 2

Is angle of deflection of protons or electrons greater and why?

Answer 2

Electrons greater as they are lighter than protons

Question 3

Describe the behaviour of the subatomic particles in an electric field

Answer 3

• Electons are negatively charged and are deflected towards the positive potential
• neutons are not deflected (neutral)
• Protons are positively charged and are deflected towards the negative potential.

Question 4

equation for number of nuceons

Answer 4

number of protons + number of electrons

Question 5

define isotopes

Answer 5

Isotopes are atoms of the same element with the same number of protons but different number of neutrons

Question 6

State the shape of an S orbital and its direction

Answer 6

S orbital is spherical, symetrical and non-directional

Question 7

Draw an S orbial

Criteria of success of drawing:
1. label all 3 axes
2. draw the correct shape
3. label orbitals with quantum number
4. For 3dxy, 3dxz, 3dyz, the drawing of the axis should not cut the orbitals

Answer 7

https://chemistryguru.com.sg/shapes-of-orbitals