According to the Bohr Theory, an atom will release light energy when an electron

Question

According to the Bohr Theory, an atom will release light energy when an electron moves from a. The 3d sublevel to a 5s sublevel b. The 2p sublevel to a Is sublevel c. The 3s sublevel to a 3p sublevel ~ d. The 1s sublevel to a 2s sublevel _ release lraht ene when pom high Pemyoit tolow en 34. Which is a conclusion of the Rutherford gold foil experiment? An atom consists of a positively charged nucleus that is surrounded by positively charged particles An atom consists of a positively charged nucleus that is surrounded by negatively charged particles. An atom consists of a negatively charged nucleus that is surrounded by positively charged particles An atom consists of a negatively charged nucleus that is surrounded by negatively charged particles. a. c. d. According to the probability model of the atom, an orbital is a region of space in an atom where there is 6) a 90 % probability of finding an electron. b. a 90 % probability of finding a neutron. " c. The circular path around an atom in which electrons are found. d. The circular path around an atom in which neurons are found. Part 2: Extended Response l. Make the folowing cmverions Dun' rgt te aproptiae numbe of sig figs and to include the proper unit for your answer. a) 75.0 mg to g. 0.015a 0 b) 0.2345 m to cm.-- 23. ys cm

Explanation / Answer

33. According to Bohr's theory: an atom releases light energy when electron moves from higher energey atomic orbit to lower energy atomic orbit.

(a) electron cant jump from 3d to 5s as 5s to release light as 5s is higher in energy than 3d

(b) electron can jump from 2p to 1s as 5s to release light as 2p is higher in energy than 1s

(c) electron cant jump from 3s to 3p to release light as 3s is higher in energy than 3s

(d) electron cant jump from 1s to 2s as 5s to release light as 2s is higher in energy than 1s

So, correct option is (b)

34. Nucleus consists of prosively charged proton and neutral neutrons. So, nucleus is positively charged. And the negatively charged electrons are rotating in different orbits around the nucleus.

So, correct option is B

35. Orbital is the three dimensional space where the probability of finding electron is maximum (>90%).

So, correct option is A

Part 2:

1. (a) 75 mg = 0.075 g = 0.08 g

(b) 0.2345 m = 0.2345 m * ( 100 cm/ 1 m) = 23.45 cm

(c) 150 seconds = 150 seconds * ( 1 hour/ 3600 seconds) = 0.042 hour

(d) 4.300 * 10-4 kg /m L = 4.300 * 10-4 * 103 g / 10-3 L = 4.300 * 102 g/L

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