# Which of the following devices converts radioactive emissions to light for detection?

A. Geiger counter

B. Photographic film

C. Scintillation counter

D. none of these

Also.....

Which of the following correctly represents the tranmutation in which a curium-242 nucleus is bombarded with an alpha particle to produce a californium-245 nucleus?

A. (242/96)Cm (4/2He, 1/0n) 245/98Cf

B. 242/96 Cm (4/2He, 1/1p) 245/98 Cf

C. 242/96 Cm( 4/2He, 1/-1e) 245/98 Cf

D. 242/96 Cm (1/0n, 4/2 He) 245/98 Cf

E. 242/96 Cm (4/2 He, 2 1/1p) 245/98 Cf

The nuclear disintegration series of_______is the source of radon-222 in the soil.

A. 235-U

B. 238-U

C. 236-Pb

D. 235-Th

E. 14-C

I think its B. What do you think?

In the nuclear transmutation represented by 239/94 Pu (4/2 He, 1/0 n) what is the product?

A. uracnium-242

B. curium-245

C. curium-242

D. uranium-245

i think its C...what do you think?

Thanks so much!!!

• Lancenigo di Villorba (TV), Italy

QUESTION n.1

"Which of the following devices converts radioactive emissions to light for detection?"

QUESTION n.2

"Which of the following correctly represents the tranmutation in which a curium-242 nucleus is bombarded with an alpha particle to produce a californium-245 nucleus?"

MY HINT IS :"A. (242/96)Cm (4/2He, 1/0n) 245/98Cf"

You have to verify

ATOMIC MASS SUM :"242 + 4 = 1 + 245"

ATOMIC NUMBER SUM :"96 + 2 = 96 + 0"

QUESTION n.3

"The nuclear disintegration series of_______is the source of radon-222 in the soil."

MY HINT IS :"B. 238-U"

YOU HAVE TO EXECUTE ONE Alpha-Decay

(238/92)U (--, 4/2 He) (234/90)Th

FOLLOWED BY Beta-Decay

(234/90)Th (--, 1/-1e) (234/91)Pa

AND YOU CONTINUE BY OTHER THREE TIMEs DESCENDING TO RADON (222/86)Rn.

QUESTION n.4

"In the nuclear transmutation represented by 239/94 Pu (4/2 He, 1/0 n) what is the product?"

MY HINT IS :"C. curium-242"

You have to verify

ATOMIC MASS SUM :"239 + 4 = 1 + 242"

ATOMIC NUMBER SUM :"94 + 2 = 96 + 0"

I hope this helps you.

• C. a scintillation counter measures ionizing radiation through the use of an intermediate scintillator (solid or liquid) which generates photons of light in response to incident radiation.