Advertisements
Advertisements
Question
One nm is equal to :
Options
10–9 mm
10–7 cm
10–9 cm
10–6 m
Advertisements
Solution
10−7 cm
One nanometre is equal to 10−7 centimetre.
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.
The average atomic mass of a sample of an element X is 16.2 u. What are the percentages of isotopes `""_8^16X" and """_8^18X` in the sample?
WRITE SHORT ANSWER
Define an ionic compound.
Define:- Atom
Define:- Radicals
Write the names of the elements present in the:-
Sodium hydroxide
What value has been given to the mass of this reference atom ?
Draw diagrams representing the atomic structures of the following:
- Sodium atom
- Chlorine ion
- Carbon atom
- Oxygen ion
Name the gas that.
Turns moist starch iodide paper blue black.
The smallest particle of matter that can exist by itself is ______.
A compound containing one atom of carbon and two atoms of oxygen is ______.
The basic unit of matter is ______.
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
Define the following term with an example.
Non-metal
Define the following term with an example.
Metalloid
Atoms of different elements having the same number of ______ are called isotones.
A sample of vitamic C is known to contain 2.58 ×1024 oxygen atoms. How many moles of oxygen atoms are present in the sample?
______ is a substance that is made up of three oxygen atoms chemically combined.
What is the fundamental particle of an element?
