Chemistry - Quiz 3: Golden years to Bohr model

Which scientist discovered the neutron?

Chadwick

The maximum number of electrons in a p sub-level is:

6

The 3 in 4p 3 represents:

the number of electrons

Give the orbital configuration of the following elements using the s, p, d, f type representation. (Answer format is: 1se2 = 1s 2 )

helium, nitrogen, silicon

helium nitrogen silicon

1. Helium (He): - Helium has 2 electrons. - Orbital Configuration: 1s²

2. Nitrogen (N): - Nitrogen has 7 electrons. - Orbital Configuration: 1s² 2s² 2p³

3. Silicon (Si): - Silicon has 14 electrons. - Orbital Configuration: 1s² 2s² 2p⁶ 3s² 3p²

Name the element that corresponds to the following electron configuration.

1s 2 , 2s 2 , 2p 1

boron

Consider the two electron arrangements for neutral atoms A and B. What is the atomic number of A?

A - 1s 2 , 2s 2 , 2p 6 , 3s 1B - 1s 2 , 2s 2 , 2p 6 , 5s 1

11

Consider the two electron arrangements for neutral atoms A and B. What is the atomic number of B?

A - 1s 2 , 2s 2 , 2p 6 , 3s 1

B - 1s 2 , 2s 2 , 2p 6 , 5s 1

11

Consider the two electron arrangements for neutral atoms A and B. Are atoms A and B the same element?

A - 1s 2 2s 2 2p 6 3s 1

B - 1s 2 2s 2 2p 6 5s 1

yes

Consider the two electron arrangements for neutral atoms A and B. What is the difference between atom A and atom B?

A - 1s 2 2s 2 2p 6 3s 1

B - 1s 2 2s 2 2p 6 5s 1

The outer electron of atom B has moved to a higher energy state.

Consider the two electron arrangements for neutral atoms A and B. The outer electron of atom B has moved to a higher energy state. What could cause this difference?

A - 1s 2 2s 2 2p 6 3s 1

B - 1s 2 2s 2 2p 6 5s 1

Atom B has absorbed energy, perhaps by heating.

Consider the two electron arrangements for neutral atoms A and B. Which atom is more stable?

A - 1s 2 2s 2 2p 6 3s 1

B - 1s 2 2s 2 2p 6 5s 1

A

What does the p mean in 1s 2 2s 2 2p 6 3s 1 ?

one of the 4 sub-shells

Which statement applies to the electron at state 2?

It possesses greater energy than the ground state.

What causes the lines in the spectrum for elements?

a quantum release of energy as electrons drop back to their ground state

What is the maximum number of electrons found in any shell of the known elements?

32

What is the atomic number of the first element to start filling an f sub-level?

58

Complete the chart. (Remember to enter a 0 if necessary.)

Atomic Number: 3

2

1

0

0

0

0

0

0

0

(WRONG ANSWER, but close):

Complete the chart. (Remember to enter a 0 if necessary.)

Atomic Number: 19

(WRONG ANSWER, but close):

2

2

6

2

2

1

0

0

0

A principal quantum number refers to:

the numbered energy levels starting from the nucleus outward