Download App

Structure of the Atom — Science STD 9 — Question

Rajasthan BoardEnglish MediumSTD 9ScienceStructure of the Atom1 Mark
Question
Elements having valency ‘one’ are:
  1. Always metals.
  2. Always non-metals.
  3. Always metalloids.
  4. Either metals or non-metals.
✓

Answer

  1. Either metals or non-metals.
Explanation:
Elements with valency 1 can be either metals or non-metals. When an atom loses one electron to gain stability, it is a metal. When an atom gains an electron to complete its octet it is a non-metal.

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

Define velocity.State its unit:
→
Gases are liquefied under ______?
→
The chemical which can be used to separate a mixture of carbon powder and sulphur powder successfully is:
  1. Carbon dioxide.
  2. Hydrochloric acid.
  3. Hydrogen sulphide.
  4. Carbon disulphide.
→
Name the long part of neuron.
→
Why does a ship made of steel float on water while an oil-pin of steel sinks down?
→
The device which converts mechanical energy into energy which runs our microwave oven is:
  1. Electric motor.
  2. Alternator.
  3. Turbine.
  4. Electric heater.
→
Which of the following can be called a suspension?
  1. Milk.
  2. Milk of magnesia.
  3. Salt solution.
  4. Vinegar.
→
Organisms having bigger size and have a complex structure are called as:
→
Protein storing plastid is:
→
Find out the wrong statement.
→