Advertisements
Advertisements
Question
Name two particles found inside the nucleus. What are they collectively called ?
Advertisements
Solution
Protons and Neutrons. Mass number.
APPEARS IN
RELATED QUESTIONS
ANSWER IN DETAIL
State the postulates of the Dalton’s atomic theory.
Write the names of the elements present in the:-
Sodium hydroxide
Define: Relative atomic mass
Give the charge and the mass of an electron, proton and neutron present in an atom ?
What are orbits or shells ?
Write electronic configuration of oxygen, fluorine, sodium, silicon, argon.
Name the particle or particles you would expect to find in :
The nucleus of an atom
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
What is such a particle called ?
Dalton's atomic theory says that atoms are indivisible. Is this statement still valid ? Give reasons for your answer.
State two observations which show that atom is not indivisible.
Give scientific reason.
All the mass of an atom is concentrated in 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 |
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.
Which of the following statements made by Dalton has not undergone any change?
In all atoms of an element
Which of the following has maximum number of atoms?
Does the solubility of a substance change with temperature? Explain with the help of an example.
Dalton’s atomic theory successfully explained
(i) Law of conservation of mass
(ii) Law of constant composition
(iii) Law of radioactivity
(iv) Law of multiple proportions
