Download App

Materials : Metals and Non-Metals — Science STD 8 — Question

Gujarat BoardEnglish MediumSTD 8ScienceMaterials : Metals and Non-Metals1 Mark
MCQ
How many electrons are present in non$-$metals in their outermost shell$?$
  • A
    $1, 2$ or $3$
  • B
    $8, 9$ or $10$
  • C
    $10, 20$ or $30$
  • ✓
    $4, 5, 6$ or $7$
✓

Answer

Correct option: D.
$4, 5, 6$ or $7$
Non$-$metals generally contain $4, 5, 6, 7$ or $8$ electrons in their outermost orbit or shell.
$i.$ Carbon $2, 4$
$ii.$ Nitrogen $2, 5$
$iii.$ Oxygen $2, 6$
$iv.$ Fluorine $2, 7$
The number of valence electrons in carbon, nitrogen, oxygen and fluorine are $4, 5, 6, 7$ respectively.

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. [I MARKS]" from Materials : Metals and Non-Metals→Materials : Metals and Non-Metals — all question types→Science STD 8 question papers→Gujarat Board STD 8 question papers→Gujarat Board question paper generator→

Similar questions

A device used to test whether an object is carrying charge or not is called $............$
→
Deforestation increases the level of one of the following in the atmosphere.
→
Which among the following is the most reactive metal?
→
What is the underlying principle based on which fractional distillation is carried out?
→
Which of the following sound frequencies can be heard by a woman having a normal hearing range?
$A. 25000Hz.$
$B. 15\ kHz.$
$C. 40000Hz.$
$D. 25Hz.$
→
The empty blank looking structures in the cytoplasm is
→
Which of the following tables correctly matches the given zones of a candle flame with their respective characteristics?
→
The device used to measure intensity of earthquakes is:
→
Assertion (A) Sound travels slower through gases than liquid.
Reason (R) The molecules in gases are farther apart from each other.
→
Loudness of sound is determined by
→