| Date | May 2009 | Marks available | 1 | Reference code | 09M.1.hl.TZ1.5 |
| Level | HL | Paper | 1 | Time zone | TZ1 |
| Command term | Identify | Question number | 5 | Adapted from | N/A |
Question
Which species possesses only two unpaired electrons?
A. Zn
B. Mg
C. \({\text{T}}{{\text{i}}^{2 + }}\)
D. \({\text{F}}{{\text{e}}^{2 + }}\)
Markscheme
C
Examiners report
[N/A]
Syllabus sections
Show 79 related questions
- 17N.2.sl.TZ0.2d: Describe the emission spectrum of hydrogen.
- 17N.1.sl.TZ0.6: Which is the electron configuration of a chromium atom in the ground state? A....
- 17N.2.hl.TZ0.2b: Outline how this spectrum is related to the energy levels in the hydrogen atom.
- 17M.2.sl.TZ2.1d: Outline the model of electron configuration deduced from the hydrogen line emission spectrum...
- 17M.1.sl.TZ2.6: Which electron transition emits radiation of the longest wavelength?
- 17M.2.sl.TZ1.2d.i: State the full electron configuration of the \({}_{22}^{48}{\text{Ti}}\)2+ ion.
- 17M.1.sl.TZ1.7: The full electron configuration of an element is: 1s22s22p63s23p2 To which group and period...
- 17M.1.sl.TZ1.6: Which electron transition in the hydrogen atom emission spectrum emits radiation with...
- 16N.2.hl.TZ0.4d: (i) Explain the convergence of lines in a hydrogen emission spectrum. (ii) State what can be...
- 16N.2.hl.TZ0.4c: Magnesium ions produce no emission or absorption lines in the visible region of the...
- 16N.1.sl.TZ0.6: What is the condensed electron configuration of the Fe2+ ion? A. [Ar]3d6B. [Ar]3d44s2C....
- 16N.1.sl.TZ0.5: Which is correct for the line emission spectrum for hydrogen? A. Line M has a higher...
- 16M.2.hl.TZ0.4c: Outline, giving the full electron configuration of the vanadium atom, what is meant by the...
- 16M.2.sl.TZ0.4d: Draw a 1s atomic orbital and a 2p atomic orbital.
- 16M.2.sl.TZ0.4c: A sample of compound A was prepared in which the 12C in the CH2 group was replaced by...
- 16M.1.sl.TZ0.6: Which electron configuration is correct for the selenide ion, Se2−? A. 1s2 2s2 2p6 3s2 3p6...
- 15M.2.hl.TZ1.8e: Describe how chlorine’s position in the periodic table is related to its electron arrangement.
- 15M.1.sl.TZ1.28: Which statements about the chlorine free radical are correct? I. It has 18...
- 15M.1.sl.TZ1.7: What is the total number of valence electrons in...
- 15M.1.sl.TZ1.6: Ultraviolet radiation has a shorter wavelength than infrared radiation. How does the...
- 14M.1.hl.TZ1.5: Which electron configurations do not follow the Hund's rule? A. I and II only B. ...
- 14M.1.hl.TZ2.5: Which statement correctly describes the atomic emission spectrum of hydrogen? A. It is a...
- 14M.1.sl.TZ1.5: The diagram represents the emission spectrum of hydrogen. Groups of arrows are labelled W, X...
- 14M.1.sl.TZ1.6: Which species have the same electron arrangements? I. \({{\text{O}}^{2 - }}\),...
- 14M.1.sl.TZ1.7: Which statement about the periodic table is correct? A. The elements with atomic numbers...
- 15M.3.sl.TZ1.1a: State the relationship between the energy of a wave and its wavelength.
- 14M.3.sl.TZ2.1b: Two types of spectroscopy are absorption and emission. Distinguish between each type of...
- 14M.3.sl.TZ1.1a: Describe the essential difference between the emission spectrum of sodium and the absorption...
- 14N.2.hl.TZ0.10c: State the relationship between the electron arrangement of an element and its group and...
- 14N.1.sl.TZ0.6: Some possible electron transitions in a hydrogen atom are shown below. Which letter...
- 14N.2.sl.TZ0.8d: (i) State the property that determines the order in which elements are arranged in the...
- 13N.1.hl.TZ0.5: What is the abbreviated electron configuration of the telluride ion,...
- 13N.2.hl.TZ0.4a: State the electron configuration of the manganese ion in EUK-134.
- 13N.1.sl.TZ0.7: In the emission spectrum of the hydrogen atom, which electronic transition would produce a...
- 13M.1.hl.TZ1.5: What is the correct electron configuration of the \({\text{C}}{{\text{u}}^ + }\) ion? A. ...
- 13M.2.hl.TZ1.7b.vi: Draw the abbreviated orbital diagram for the iron ion in [Fe(CN)6]3– using the arrow-in-box...
- 13M.2.hl.TZ1.6c.i: Apply the Aufbau principle to state the full electron configuration for an atom of phosphorus.
- 13M.2.hl.TZ1.7b.v: Draw the abbreviated orbital diagram for an iron atom using the arrow-in-box notation to...
- 13M.1.sl.TZ1.7: Which diagram shows a pattern similar to the emission spectrum of...
- 13M.1.hl.TZ2.5: Which species has the electron configuration of...
- 13M.2.hl.TZ2.3c.ii: State the maximum number of orbitals in the \(n = 4\) energy level.
- 13M.2.hl.TZ2.3c.i: Draw the shape of an s orbital and a px orbital. Label the x, y and z axes on each diagram.
- 13M.2.hl.TZ2.3d: A number of ruthenium-based anti-cancer drugs have also been developed. State the full...
- 13M.2.hl.TZ2.3e: Iron is in the same group in the periodic table as ruthenium. Construct the orbital diagram...
- 13M.3.sl.TZ2.A2c: Describe how the wavelength, the frequency, and the energy, change in moving from the...
- 12N.2.hl.TZ0.1f.i: State the full electron configuration of iodine \((Z = 53)\).
- 12N.1.sl.TZ0.6: Which statement about the electromagnetic spectrum is correct? A. Infrared light has a...
- 12N.2.sl.TZ0.4a: (i) Define the terms atomic number, mass number and isotopes of an element. Atomic...
- 12N.2.sl.TZ0.4b: (i) Distinguish between a continuous spectrum and a line spectrum. (ii) Draw a...
- 09N.2.hl.TZ0.3a: Describe the emission spectrum of hydrogen. Outline how this spectrum is related to the...
- 09N.1.sl.TZ0.6: Which species have the same number of electrons? I. \({{\text{S}}^{2 - }}\) II. ...
- 10M.2.hl.TZ1.1c.i: State the full electronic configuration of \({\text{C}}{{\text{u}}^{2 + }}\).
- 10M.2.sl.TZ1.4f: With reference to electronic arrangements, suggest why the reaction between rubidium and...
- 10M.2.sl.TZ2.2: Draw and label an energy level diagram for the hydrogen atom. In your diagram show how the...
- 10M.1.sl.TZ2.7: What is the electron arrangement of the \({\text{M}}{{\text{g}}^{2 + }}\) ion? A. ...
- 09M.2.hl.TZ1.8c.i: State the full electronic configurations of copper, Cu, and the copper(I) ion,...
- 09M.1.sl.TZ1.8: Which is correct for the following regions of the electromagnetic spectrum?
- 09M.1.hl.TZ2.7: What is the electron configuration of the \({\text{C}}{{\text{r}}^{2 + }}\) ion? A. ...
- 09M.1.hl.TZ2.6: What is the order of increasing energy of the orbitals within a single energy level? A. ...
- 09M.2.hl.TZ2.3a.i: Draw the shape of the \({{\text{p}}_{\text{z}}}\) orbital using the coordinates shown.
- 09M.2.hl.TZ2.3a.ii: State the electron configuration of \({\text{F}}{{\text{e}}^{3 + }}\).
- 09M.2.hl.TZ2.3a.v: The element selenium \({\text{(}}Z = 34{\text{)}}\) has electrons in the 4s, 3d and 4p...
- 09M.2.hl.TZ2.5a.ii: State the maximum number of orbitals in the \(n = 2\) energy level.
- 11M.1.hl.TZ1.5: What is the electron configuration of vanadium? A. ...
- 11M.2.hl.TZ1.3c: Deduce the electron configuration for the ion \({\text{C}}{{\text{o}}^{2 + }}\).
- 11M.2.hl.TZ2.3a.i: Explain what the square brackets around argon, [Ar], represent.
- 11M.2.hl.TZ2.3a.ii: State the values of \(x\) and \(y\).
- 11M.2.hl.TZ2.3a.iii: Annotate the diagram below showing the 4s and 3d orbitals for a chromium atom using an arrow,...
- 11M.1.sl.TZ2.7: In the emission spectrum of hydrogen, which electronic transition would produce a line in the...
- 11M.3.sl.TZ2.A1a: Identify region A.
- 11M.3.sl.TZ2.A1c: State which region of the electromagnetic spectrum can be used to identify the functional...
- 11M.3.sl.TZ2.A1d: Explain why the absorptions in infrared (IR) spectroscopy occur at much higher frequency than...
- 12M.1.hl.TZ2.5: In the electromagnetic spectrum, which will have the shortest wavelength and the greatest...
- 12M.1.sl.TZ2.8: Which statements are correct for silicon? I. Its electron arrangement is 2,8,4. II. ...
- 12M.1.sl.TZ2.7: What is the name of the type of spectrum consisting only of specific wavelengths? A. ...
- 11N.1.hl.TZ0.6: Which shows the sub-levels in order of increasing energy in the fourth energy level of an...
- 11N.2.hl.TZ0.2b: State why the Co-60 radioisotope is used in radiotherapy.
- 11N.2.hl.TZ0.7e.iv: Draw an orbital box diagram (arrow-in-box notation) showing the electrons in the 4s and 3d...
- 11N.1.sl.TZ0.6: Which statement about the electromagnetic spectrum is not correct? A. The wavelength of...
