Advertisements
Advertisements
प्रश्न
Define: Chemical bond
Advertisements
उत्तर
Chemical bond— A chemical bond is the binding force between two or more atoms of a molecule.
APPEARS IN
संबंधित प्रश्न
If bromine atom is available in the form of, say, two isotopes `""_35^79Br (49.7%)" and """_35^81Br (50.3%)`, calculate the average atomic mass of bromine atom.
TRUE \ FALSE
Elements having a tendency to accept electrons are called metals
WRITE SHORT ANSWER
Name three inert gases.
Define:- Radicals
Write the names of the elements present in the:-
Glucose
Define: Relative atomic mass
Give the charge and the mass of an electron, proton and neutron present in an atom ?
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
What is the charge on the particle ?
Fill in the blank
If an atom gains an electron, it is called an _______
Fill in the blank
A charged particle is called an _____
Write the full form of IUPAC.
State two observations which show that atom is not indivisible.
Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
Which will form positive ion?
A radical take part – unsplit in a chemical reaction and retains its identity in reactions.
With reference to the radical –
- ammonium
- bisulphate
- carbonate
state the group of atoms present in each radical.
Project.
To have an idea of what atoms are, students can be asked to construct atoms using pipe cleaners (thin metal wires-electron shells), pompoms (balls-different colours for protons and neutrons) and beads (electrons). Students will love and enjoy putting them together and they look great hanging from the ceiling in the classroom.
In the nucleus of `""_20"Ca"^40`, there are ______
Atoms of different elements having the same number of ______ are called isotones.
Atoms of one element can be transmuted into atoms of other elements by ______
The number of atoms present in a molecule is called its ______.
Give the salient features of “Modern atomic theory”.
