| Date | May 2021 | Marks available | 1 | Reference code | 21M.1.sl.TZ1.7 |
| Level | SL | Paper | 1 | Time zone | TZ1 |
| Command term | Deduce | Question number | 7 | Adapted from | N/A |
Question
Which species has the same electron configuration as argon?
A. Br−
B. Ca2+
C. Al3+
D. Si4+
Markscheme
B
Examiners report
Syllabus sections
- 18M.1.sl.TZ2.8: Which element is in the p-block? A. Pb B. Pm C. Pt D. Pu
- 22M.1.sl.TZ2.8: Which element is found in the 4th group, 6th period of the periodic table? A. Selenium B....
- 17M.1.sl.TZ2.7: Which property increases down Group 1, the alkali metals? A. Atomic radius B. ...
- 17M.1.sl.TZ2.8: Which element is a lanthanide? A. Hf B. Tb C. U D. Y
-
19M.1.hl.TZ1.6:
Which describes an atom of bismuth, Bi (Z = 83)?
- 19M.1.hl.TZ2.7: How do the following properties change down Group 17 of the periodic table?
-
19M.1.sl.TZ2.7:
Which of the following would have the same numerical value for all elements in the same period?
A. Highest energy levels occupied
B. Energy sub-levels occupied
C. Orbitals occupied
D. Valence electrons
-
19M.3.hl.TZ1.1b(ii):
Suggest, with a reason, whether the lanthanoids or actinoids of the f-block would have the higher density.
-
17N.1.hl.TZ0.7:
Which electron configuration is that of a transition metal atom in the ground state?
A. [Ne]3s23p64s1
B. [Ar]3d9
C. 1s22s22p63s23p64s23d104p2
D. [Ar]4s13d5
-
19M.1.sl.TZ1.7:
Which describes an atom of bismuth, Bi (Z = 83)?
- 19N.1.sl.TZ0.8: Which is an f-block element? A. Sc B. Sm C. Sn D. Sr
-
21M.1.sl.TZ2.8:
Which is a d-block element?
A. Ca
B. Cf
C. C
D. Co
-
21M.2.sl.TZ1.1b:
Justify why sulfur is classified as a non-metal by giving two of its chemical properties.
-
20N.3.hl.TZ0.4c(iii):
Suggest a gas which should be continuously passed over the molten magnesium in the electrolytic cell.
-
19M.3.sl.TZ1.1b(ii):
Suggest, with a reason, whether the lanthanoids or actinoids of the f-block would have the higher density.
-
20N.3.sl.TZ0.4b(iv):
Suggest a gas which should be continuously passed over the molten magnesium in the electrolytic cell.
- 22M.2.sl.TZ1.1a(ii): State the block of the periodic table in which magnesium is located.
-
21M.2.hl.TZ1.1b:
Justify why sulfur is classified as a non-metal by giving two of its chemical properties.
