Quiz
Atomic Structure
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Perguntas do quiz (11)
1Define relative atomic mass.
- AThe weighted mass of one mole of an atom compared to 1/12th of an atom of carbon-12.
- BThe average weighted mass of one mole of an atom compared to 1/12th of an atom of carbon-12.
- CThe number of protons found in the nucleus of an atom.
- DThe sum of protons and neutrons found in the nucleus of an atom.
2What are the features of isotopes?
- AThey have the same number of protons but a different number of neutrons as its standard element.
- BThey have the same number of neutrons but a different number of protons as its standard element.
- CThey have the same number of electrons as its standard element.
- DThey have a different number of electrons as its standard element.
3Bromine's atomic number is 79 and its atomic mass is 35. Use the periodic table to help you.
- AVerdadeiro
- BFalso
4Electron configuration of bromine = 1s2 [blank_start]2s[blank_end]2 2p[blank_start]6[blank_end] 3[blank_start]s[blank_end]2 3p6 4s[blank_start]2[blank_end] [blank_start]3d10[blank_end] [blank_start]4p[blank_end]5
- A3d10
- B4p
- C2
- Ds
- E6
- F2s
5First ionisation energy is the [blank_start]amount of energy[blank_end] it take to remove the [blank_start]most loosely held[blank_end] electron from the outer shells of [blank_start]one mole[blank_end] of a gaseous atom to produce one mole of [blank_start]gaseous ions[blank_end] with a charge of [blank_start]1+[blank_end].
- Aamount of energy
- Bnumber of electrons
- Cnumber of ions
- Dmost loosely held
- Einnermost
- Fvalence
- Gone mole
- Hone iota
- Ione gram
- Jgaseous ions
- Ksolid ions
- Lelectronic energy
- M1+
- N2-
- O1-
6The [blank_start]first[blank_end] ionisation energy of [blank_start]sodium[blank_end] = [blank_start]Na[blank_end](g) -------> Na+[blank_start](g)[blank_end] + [blank_start]e-[blank_end]
- Afirst
- Bsecond
- Csodium
- Dnickel
- ENa
- FNi
- G(g)
- H(aq)
- Ie-
- Jheat
7What happens at the ionisation stage of mass spectrometry?
- AAn electron gun fires high energy electrons at the atoms of the vaporised sample, removing the most loosely held electron in each one so they become positively charged.
- BAn electron gun fires high energy electrons at the atoms of the vaporised sample, attaching to the outer shell of each one so they become negatively charged.
- CThe ions are accelerated so they all have the same kinetic energy.
- DThe ions a decelerated so they all have the same kinetic energy.
8What two things does the m/z ratio show?
- AThe mass of the ion
- BThe number of protons the ion contains
- CThe charge of the ion
- DThe weight of the ion
93 s.f. means exactly the same as 3 d.p.
- AVerdadeiro
- BFalso
10Generally ionisation energy [blank_start]increases[blank_end] across period 3. The dip between Mg and Al occurs because Al has a [blank_start]3p[blank_end] electron orbital which increases the distance between the [blank_start]outer electron[blank_end] and the nucleus and reduces the pull of the [blank_start]nucleus[blank_end]. The drop between P and Si occurs because P has a [blank_start]balanced[blank_end] set of electron orbitals whereas Si has one paired and two [blank_start]singular[blank_end] meaning there is slightly more [blank_start]repulsion[blank_end] so [blank_start]less[blank_end] energy.
- Aincreases
- B3p
- Couter electron
- Dnucleus
- Ebalanced
- Fsingular
- Grepulsion
- Hless
11Ionisation energy [blank_start]decreases[blank_end] down a group because while there are more [blank_start]protons[blank_end] in the nucleus their increased pull is negated by the [blank_start]increasing[blank_end] number of electron shells. This all increases the atomic [blank_start]radius[blank_end] so it's [blank_start]easier[blank_end] to lose the outermost electron.
- Adecreases
- Bincreases
- Cprotons
- Dneutrons
- Eincreasing
- Fdecreasing
- Gradius
- Hmass
- Ieasier
- Jharder
Informações
- Descrição
- Chemistry (Atomic Structure and The Periodic Table) Quiz sobre Atomic Structure, criado por Kirsten Rowland em 23-01-2017.
- Autor
- Kirsten Rowland
- Idioma
- English
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