Advertisements
Advertisements
Question
An atom has 13 protons and 14 neutrons.
What is the atomic mass of the atom ?
Advertisements
Solution
What is the atomic mass of the atom= 27
APPEARS IN
RELATED QUESTIONS
TRUE \ FALSE
Elements having a tendency to accept electrons are called metals
WRITE SHORT ANSWER
Define an ionic compound.
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 :-
Sulphuric acid
Fill in the blank:
Atoms are _____
Define: Relative atomic mass
Define: Covalent bond
How did Neils Bohr visualise the atom ?
Name the particle or particles you would expect to find in :
The orbit of an atom
Fill in the blank
A charged particle is called an _____
What is the usual symbol for (a) and electron (b) a proton, and (c) a neutron?
Dalton's atomic theory says that atoms are indivisible. Is this statement still valid ? Give reasons for your answer.
Which of the following statement is correct about the atom of an element ?
Deduce from the datum provided.
| Datum | To deduce |
| \[\ce{_11^23Na}\] | Neutron number |
| \[\ce{_6^14C}\] | Mass number |
| \[\ce{_17^37 Cl}\] | Proton number |
The smallest particle of matter that can exist by itself is ______.
Define the following term with an example.
Non-metal
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
Lead is also known as plumbum.
