Atoms
Trending Questions
Difference between atoms and molecules
The electronic configuration of calcium is 2, 8, 8, 2.So why we can't write it as 2, 8, 9, 1?
During Rutherford's experiment some of the alpha-particles were deflected by the foil by small angles. What does this prove?
There is a positively charged body present in the atom.
Alpha-particles move in a straight line.
Alpha-particles are not electrically charged.
Atom is very large in size.
What are the rules for writing a chemical formula? [3 MARKS]
The formula of a compound represents
The name of the compound
The elements constituting the compound
The molecular weight of the compound and the relative weights of different elements present in it.
All of the above
What is the atomicity of Silver and what is it's valency ?
Which of the following statements is not true about an atom?
Atoms are not able to exist independently
Atoms are the basic units from which molecules and ions are formed
Atoms are always neutral in nature
Atoms aggregate in large numbers to form the matter that we can see, feel or touch
Why is used as the symbol for Sodium?
A number of moles of water in of is-
50 g of contains :
50 moles of
0.5 moles of atoms
one mole of carbonate ions
12 g of carbon
The word atom is derived from Greek word - Atomos which means
Divisible
Non - divisible
Tiny
Smallest
Which atom is the smallest atom of all?
Lithium
Helium
Hydrogen
Carbon
How many grams of molecules of are present in 4.9 g of the acid?
Atomic number is equal to:
Number of protons + Number of electrons
Number of neutrons
Number of protons + Number of neutrons
Number of protons
Why ammonia is a good ligand?
What is an atom
Difference Between Fe3 and Fe 2
How does an object become positively charged?
- False
- True
What are protons and neutrons made up of ?
What is the scientific name of particles which make up matter ?
Is an atom divisible or indivisible?
Can an atom be destroyed?
Suppose you have taken a dilute solution of oleic acid in such a way that its concentration becomes 0.01 cm3 of oleic acid per cm3 of the solution. Then you make a thin film of this solution (monomolecular thickness) of area 4 cm2 by considering 100 spherical drops of radius Then the thickness of the oleic acid layer will be where x is _________.
Calculate the number of neutrons present in the nucleus of an element X which is represented as 3115X