Download App

Structure of the Atom — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceStructure of the Atom2 Marks
Question
Define valency of an element. What valency will be shown by an element having atomic number 14?
✓

Answer

The capacity of an atom of an element to form chemical bonds is known as its valency. Valency of an atom with atomic no. 14 is 4.

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 "Que-Ans (Each of 2 Mark )" 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

What is meant by man-made elements?
→
What is the difference between solutions and colloids?
→
Composition of the nuclei of two atomic species A and B is given as under:
 
A
B
Protons
18
20
Neutrons
22
20
Give the mass numbers of A and B. What is the relation between the two species and which element or elements they represent?
→
If 25ml of acetone is present in 150ml of its aqueous solution, calculate the concentration of solution.
→
Which contains more heat, 1kg of ice at 0°C or 1kg of water at 0°C? Give reason for your answer.
→
What is a suspension? Give two examples of suspensions.
→
What is an electron? State its relative mass and charge.
→
Identify the animal tissues from the given descriptions:
Tissue 'A’- cells are filled with fat globules and the tissue acts as an insulator.
Tissue 'B'- has cylindrical branched cells and the tissue shows rhythmic contraction and relaxation thought life.
→
What is vaccum? Explain why, sound cannot travel through vacuum?
→
There are two types of forces X and Y. The forces belonging to type X can produce motion in a stationary object but cannot change the shape of the object. On the other hand, forces belonging to type Y cannot produce motion in a stationary object but can change the shape of the object. What is the general name of the forces such as (a) X, and (b) Y?
→