Advertisements
Advertisements
प्रश्न
Select the correct answer to the statement given below:
Imaginary path around the nucleus of an atom in which electrons revolve.
पर्याय
Molecule
Orbits
Atom
Valency
Radical
Advertisements
उत्तर
Orbit
APPEARS IN
संबंधित प्रश्न
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.
ANSWER IN DETAIL
Enlist the features of Bohr’s model of an atom. How did he correct the Rutherford’s model ?
Write the names of the elements present in the:-
Glucose
Fill in the blank:
Atoms are _____
Define: Covalent bond
Fill in the following blanks with suitable words :
In water, the proportion of oxygen and hydrogen is .............. by mass.
The electron shell ______ is nearest to the nucleus.
Deduce from the datum provided.
| Datum | To deduce |
| \[\ce{_11^23Na}\] | Neutron number |
| \[\ce{_6^14C}\] | Mass number |
| \[\ce{_17^37 Cl}\] | Proton number |
State the meaning of the term – (a) atom, (b) molecule, (c) radical – with a suitable example.
Select the correct answer to the statement given below:
The smallest particle of a substance – capable of independent existence and which retains the characteristics of the substance.
State true or false. If false, correct the statement.
The basic unit of an element is molecule.
______ is the smallest particle of an element.
The volume occupied by 4.4 g of CO2 at S.T.P ______
You are provided with a fine white coloured powder which is either sugar or salt. How would you identify it without tasting?
The graphite refill used is pencil is made of element called ______.
______ is a substance that is made up of three oxygen atoms chemically combined.
An atom of Oxygen (O) and two atoms of hydrogen (H.) combine to form a molecule of ______.
The ______ are combination of atoms of various elements or the same element.
