Click the correct answer (True or False).
Click the correct answer.
The e/m ratio of electron calculated by Thomson was found to be equal to which of the following?
1.78 × 108 C g –1
1.78 × 107 C g –1
1.78 × 109 C g –1
1.78 × 1010 C g –1
Which of the following is the mass of an electron?
8.01 x 10–28 g
9.1 x 10–28 g
8.1/10–28 g
9.1/10–27 g
What is the charge on an electron?
One unit positive charge, 1.620 × 1019 coulomb
One unit negative charge, 1.602 × 10–18 coulomb
One unit negative charge, 1.602 × 10–19 coulomb
One unit negative charge, 1.062 × 10–19 coulomb
What was the thickness of gold foil used by Ernest Rutherford in his experiment?
0.04 cm
0.004 cm
0.0004 cm
0.00004 cm
What will be the electronic configuration of phosphorus?
2, 8, 5
2, 8, 4
2, 8, 3
2, 8, 2
