Advertisements
Advertisements
Question
Write the names of `"Ca"("NO"_3)_2` compounds :
Advertisements
Solution
`"Ca"("NO"_3)_2` - Calcium Nitrate
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
Cathode rays are a stream of fast moving particles that travel in random directions.
WRITE SHORT ANSWER
Name three inert gases.
Define: Relative atomic mass
What does the word ‘atom’ mean?
How did Neils Bohr visualise the atom ?
An atom has 13 protons and 14 neutrons.
What is the atomic number of the atom ?
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
What is the mass number of X?
Fill in the blank
If an atom gains an electron, it is called an _______
Name the three subatomic particles present in an atom.
Name the unit in which the radius of an atom is usually expressed.
State two observations which show that atom is not indivisible.
Draw the diagrams representing the atomic structures of the following: Neon
Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
Which element will lose electron?
Draw the structure of an atom and explain the position of the sub-atomic particles.
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.
Metal
Define the following term with an example.
Metalloid
______ is the smallest particle of an element.
Atoms of different elements having ______ mass numbers, but ______ atomic numbers are called isobars.
