Download App

Structure of the Atom — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceStructure of the Atom1 Mark
MCQ
The electron distribution in an aluminium atom is:
  • ✓
    $2, 8, 3.$
  • B
    $2, 8, 2.$
  • C
    $8, 2, 3.$
  • D
    $2, 3, 8.$
✓

Answer

Correct option: A.
$2, 8, 3.$
The atomic number of aluminium is $13$ and the first shell can have at the most two electrons. Hence, option $(a)$ is correct.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q. [1 M]" from Structure of the Atom→Structure of the Atom — all question types→Science STD 9 question papers→Gujarat Board STD 9 question papers→Gujarat Board question paper generator→

Similar questions

Which gas is likely to be reduced in the atmosphere by deforestation?
→
The growing of different crops on a piece of land in pre$-$planned succession is called:
→
  1. Falling coconut$:$ Kinetic energy
  2. Stone on tower$: …………………$
→
Parenchyma which contains chlorophyll is called:
→
Due to the deposition of $.......$  the cell walls of collenchyma cells are irregularly thick.
→
The undefined nuclear region of prokaryotes are also known as:
→
Thrust is a _______ quantity.
→
If a cell swells, after being placed in solution, the solution is:
→
The SI unit of retardation is $......$ ?
→
The compound plants composed of algae and fungi are called:
→