Advertisements
Advertisements
Question
Write the full form of IUPAC.
Advertisements
Solution
The full form of IUPAC is International Union of Pure and Applied Chemistry.
APPEARS IN
RELATED QUESTIONS
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
ANSWER IN DETAIL
Enlist the features of Bohr’s model of an atom. How did he correct the Rutherford’s model ?
Define: Ions
What is the maximum number of electrons present in:
1. first shell
2. second shell
3. third shell and
4. fourth shell
Define: Covalent bond
Name the particle or particles you would expect to find in :
The nucleus of an atom
How many times is a proton heavier than an electron?
What value has been given to the mass of this reference atom ?
Is it possible to see atoms these days ? Explain your answer.
Which has more atoms, 50 g of aluminium or 50 g of iron ? Illustrate your answer with the help of calculations.
(Atomic masses : Al = 27 u ; Fe = 25 u)
Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
What will be the charge present of the molecule XY after chemical combination?
Select the correct answer to the statement given below:
Imaginary path around the nucleus of an atom in which electrons revolve.
State true or false. If false, correct the statement.
The basic unit of an element is molecule.
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.
Define the following term with an example.
Compound
The number of atoms present in a molecule is called its ______.
Which of the following has maximum number of atoms?
A small block slides down on a smooth inclined plane, starting from rest at time t = 0. Let Sn be the distance travelled by the block in the interval t = n – 1 to t = n. Then, the ratio `S_n/(S_(n + 1))` is ______.
