Advertisements
Advertisements
प्रश्न
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
What is the charge on the particle ?
Advertisements
उत्तर
What is the charge on the particle – 1 (negative)
APPEARS IN
संबंधित प्रश्न
The average atomic mass of a sample of an element X is 16.2 u. What are the percentages of isotopes `""_8^16X" and """_8^18X` in the sample?
WRITE SHORT ANSWER
What is radioactivity?
Fill in the blank
If an atom gains an electron, it is called an _______
Fill in the blank
If an atom loses an electron, it acquires ______ a charge.
Name the unit in which the radius of an atom is usually expressed.
Is it possible to see atoms these days ? Explain your answer.
For the symbols H, D and T, write the subatomic particles (protons, neutrons and electrons) found in each one of them.
How many atoms are there in exactly 12 g of carbon-12 element ? (C = 12 u)
Calculate the number of moles in 12.044 × 1025 atoms of phosphorus.
Define the following term:
Atom
Electron, proton, neutron are the types of ______ in an atom.
The electronic structure [configuration] of fluorine can be written as 2, 7. In a similar way give the electronic configuration of aluminium
The basic unit of matter is ______.
The smaller particles found in the atom is called ______.
State true or false. If false, correct the statement.
The basic unit of an element is molecule.
Name the sub-atomic particles.
Define the term ions or radicals.
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
