Chemistry Test 171

The measurement of the electron position if associated with an uncertainty in momentum, which is equal to 1 × 10^–18 g cm s^{– 1} . The uncertainty in electron velocity is? (mass of an electron is 9 × 10^{– 28} g)
[2008]

Question 1/10

6.023 x 1023, 7.5 x 1023

6.023 x 1023, 15 x 1022

7.5 x 1022, 15 x 1022

15 x 1022, 7.5 x 1023

Question 2/10

4 x 1023

48 x 1021

2 x 1023

48 x 1023

Question 3/10

Spin quantum number

Magnetic quantum number

Principal quantum number

Azimuthal quantum number

Question 4/10

Question 5/10

1 × 109 cm s–1

1 × 106 cm s–1

1 × 105 cm s–1

1 × 1011 cm s–1

Question 6/10

Sodium

Potassium

Carbon

Nitrogen

Question 7/10

N-14

O-16

C-12

C-16

Question 8/10

Cobalt

Calcium

Potassium

Aluminium

Question 9/10

scandium

germanium

Gallium

Aluminium

Question 10/10

rising atomic mass in the period\s

increasing atomic number in the horizontal rows

increasing atomic number in the vertical columns

increasing atomic mass in the group

6.023 x 10²³, 7.5 x 10²³

6.023 x 10²³, 15 x 10²²

7.5 x 10²², 15 x 10²²

15 x 10²², 7.5 x 10²³

4 x 10²³

48 x 10²¹

2 x 10²³

48 x 10²³

1 × 10⁹ cm s^–1

1 × 10⁶ cm s^–1

1 × 10⁵ cm s^–1

1 × 10¹¹ cm s^–1