Nt1310 Unit 6
1
1
The nucleus of one of the isotopes of nickel is represented by 60 Ni. 28 Which line in the table correctly describes a neutral atom of this isotope? number of protons A B C D 28 28 60 60 number of neutrons 32 60 28 32 number of orbital electrons 28 28 28 32
2
A nucleus of bohrium x Bh decays to mendelevium y emissions. bohrium x Bh → dubnium + α y → lawrencium + α
255 Md 101
by a sequence of three α-particle
→ mendelevium 255 Md + α 101 How many neutrons are there in a nucleus of x Bh? y A B C D 267 261 160 154
3
Which set of radioactive emissions corresponds to the descriptions given in the table headings? high-speed electrons A B C D α α β β high-speed helium nuclei β γ α γ high-frequency photons γ
Compiled nd rearrnged by Sjit Chandra Shakya …show more content…
38 Which equation could represent this nuclear decay? A B C D
90Sr 38 90Sr 38 90Sr 38 90Sr 38 0 → 90Sr + –1 β 39 0 → 90Y + –1 β 39
→ 90Rb + 0 β 37 1 → 90Sr + 0 β 37 1
5
Protons and neutrons are thought to consist of smaller particles called quarks. The ‘up’ quark has a charge of 2 e : a ‘down’ quark has a charge of – 1 e, where e is the 3 3 –19 C). elementary charge (+1.6 x 10 How many up quarks and down quarks must a proton contain? up quarks A B C D 0 1 1 2 down quarks 3 1 2 1
6
A nucleus of the nuclide 241Pu decays by emission of a β-particle followed by the emission of an 94 α-particle. Which of the nuclides shown is formed? A
239 93 Np
B
239 91Pa
C
237 93
1
The nucleus of one of the isotopes of nickel is represented by 60 Ni. 28 Which line in the table correctly describes a neutral atom of this isotope? number of protons A B C D 28 28 60 60 number of neutrons 32 60 28 32 number of orbital electrons 28 28 28 32
2
A nucleus of bohrium x Bh decays to mendelevium y emissions. bohrium x Bh → dubnium + α y → lawrencium + α
255 Md 101
by a sequence of three α-particle
→ mendelevium 255 Md + α 101 How many neutrons are there in a nucleus of x Bh? y A B C D 267 261 160 154
3
Which set of radioactive emissions corresponds to the descriptions given in the table headings? high-speed electrons A B C D α α β β high-speed helium nuclei β γ α γ high-frequency photons γ
Compiled nd rearrnged by Sjit Chandra Shakya …show more content…
38 Which equation could represent this nuclear decay? A B C D
90Sr 38 90Sr 38 90Sr 38 90Sr 38 0 → 90Sr + –1 β 39 0 → 90Y + –1 β 39
→ 90Rb + 0 β 37 1 → 90Sr + 0 β 37 1
5
Protons and neutrons are thought to consist of smaller particles called quarks. The ‘up’ quark has a charge of 2 e : a ‘down’ quark has a charge of – 1 e, where e is the 3 3 –19 C). elementary charge (+1.6 x 10 How many up quarks and down quarks must a proton contain? up quarks A B C D 0 1 1 2 down quarks 3 1 2 1
6
A nucleus of the nuclide 241Pu decays by emission of a β-particle followed by the emission of an 94 α-particle. Which of the nuclides shown is formed? A
239 93 Np
B
239 91Pa
C
237 93