Advertisements
Advertisements
Question
Select the correct answer to the statement given below:
The basic unit of matter is not capable of independent existence.
Options
Molecule
Orbits
Atom
Valency
Radical
Advertisements
Solution
Atom
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.
Name the particles which revolve around the nucleus.
State Dalton’s atomic theory.
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
What is the charge on the particle ?
The electronic configuration of an element Z is 2, 8, 8.
(a) What is the atomic number of the element?
(b) State whether element Z is a metal or a non-metal.
(c) What type of ion (if any) will be formed by an atom of element Z? Why?
(d) What is special about the outermost electron shell of the atom of this element?
(e) Give the name and symbol of element Z.
(f) Name the group of elements to which Z belongs.
Find the mass of 2 moles of nitrogen atoms.
How many atoms are there in exactly 12 g of carbon-12 element ? (C = 12 u)
The electron shell ______ is nearest to the nucleus.
What is the contribution of the following in atomic structure?
Maharshi Kanada
Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
Which will form negative ion?
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?
Rewrite the given sentence in correct form.
Elements contain two or more kind of atoms and compounds contain only one kind of atom.
State true or false. If false, correct the statement.
An atom is electrically neutral.
Define – Atom.
An atom of an element has no electron. Will that atom have any mass or not? Can an atom exist without electron? If so then give example.
Define the following term with an example.
Compound
1 mole of Gold and Silver contain same number of atoms.
A change in the physical state can be brought about
An atom of Oxygen (O) and two atoms of hydrogen (H.) combine to form a molecule of ______.
What are the 3 most abundant atoms on the earth?
