Download App

Structure of the Atom — Science STD 9 — Question

Maharashtra BoardEnglish MediumSTD 9ScienceStructure of the Atom1 Mark
MCQ
Elements having valency ‘one’ are:
  • A
    Always metals.
  • B
    Always non$-$metals.
  • C
    Always metalloids.
  • ✓
    Either metals or non$-$metals.
✓

Answer

Correct option: D.
Either metals or non$-$metals.
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 "MCQ" from Structure of the Atom→Structure of the Atom — all question types→Science STD 9 question papers→Maharashtra Board STD 9 question papers→Maharashtra Board question paper generator→

Similar questions

Which of the following is not a mixture?
→
The dyes present in fountain pen ink can be separated by the technique of:
→
is the largest producer of electricity from solid waste.
→
In a sample of ethyl ethanoate $\ce{(CH_3COOC_2H_2)}$, the two oxygen atoms have the same number of electrons but different number of neutrons. Which of the following is the correct reason for it?
→
“Is malleable and ductile” best describes:
→
Water stored in a dam possesses:
→
The device which converts mechanical energy into energy which runs our microwave oven is:
→
The weight of an object at the centre of the earth of radius $R$ is:
→
A car is accelerated on a levelled road and acquires a velocity $4$ times of its initial velocity. During this process, the potential energy of the car:
→
When the pitch of note produced by a harmonium is lowered, then the wavelength of the note:
→