Download App

Structure of the Atom — Science STD 9 — Question

Rajasthan BoardEnglish MediumSTD 9ScienceStructure of the Atom1 Mark
Question
For an element, Z = 9. The valency of this element will be:
✓

Answer

  1. 1
Explanation:
Atomic number is 9, which means that number of electrons is also 9. Electronic configuration is 2 , 7. So, the atom will gain 1 electron to complete its octet. Therefore, the valency is 1.

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→Rajasthan Board STD 9 question papers→Rajasthan Board question paper generator→

Similar questions

Heat of fusion is the process of conversion of:
→
Molecular mass is defined as the :
→
Schwann and Schleiden were:
→
Cells and their surrounding cell membrane are usually very small because:
→
Plasmolysis in a plant cell is defined as:
→
A passenger in a moving train tosses a coin which falls behind him. Observing this statement what can you say about the motion of the train?
→
Which of the following is the seperation technique to seperate mercury and water:
→
The food engulfed as food vacuole by Amoeba is digested with the help of enzymes in the:
→
When a solid is completely immersed in a fluid, the apparent loss of weight of solid is _______ weight of fluid displaced:
→
Which of the following are physical changes?
  1. Melting of iron metal.
  2. Rusting of iron metal.
  3. Bending of an iron rod.
  4. Drawing wire of iron metal.
  1. (i), (ii) and (iii)
  2. (i), (ii) and (iv)
  3. (i), (iii) and (iv)
  4. (ii), (iii) and (iv)
→