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
Tick the most appropriate answer.
Who discovered that radioactive rays are given out by uranium?
- Henri Becquerel
- Marie Curie
- Pierre Curie
- Schmidt
TRUE \ FALSE
Elements having a tendency to accept electrons are called metals
WRITE SHORT ANSWER
Name three inert gases.
Write the names of `"Ca"("NO"_3)_2` compounds :
Give the charge and the mass of an electron, proton and neutron present in an atom ?
Name two particles found inside the nucleus. What are they collectively called ?
How did Neils Bohr visualise the atom ?
An atom has 13 protons and 14 neutrons.
What is the atomic mass of the atom ?
Fill in the blank
A deficiency of electrons produces a ________ charge.
Write the full form of IUPAC.
Calculate the number of moles in 12.044 × 1025 atoms of phosphorus.
In what respects do the three isotopes of hydrogen differ? Give their structures.
Draw the electron dot structure of this compound.
Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
Which will form negative ion?
The smallest particle of matter that can exist by itself is ______.
Define the following term with an example.
Compound
Atoms of different elements having the same number of ______ are called isotones.
The number of atoms present in a molecule is called its ______.
The graphite refill used is pencil is made of element called ______.
The first scientific theory about atoms was given by J J. Thomson.
