Advertisements
Advertisements
प्रश्न
Define – Atom.
Advertisements
उत्तर
An atom is the smallest particle of a chemical element that retains its chemical properties.
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?
Define:- Radicals
Define: Mass number
An atom has 13 protons and 14 neutrons.
What is the atomic number of the atom ?
An atom has 13 protons and 14 neutrons.
How many electrons would be present in this atom ?
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
Does the particle have an excess of electrons or a deficiency of electrons ?
Fill in the blank
An excess of electrons produces a ________ charge.
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 ?
What is the contribution of the following in atomic structure?
Maharshi Kanada
Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
Which element will lose electron?
Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
Which will form positive ion?
The smallest particle of matter that can exist by itself is ______.
Name the sub-atomic particles.
Define the following term with an example.
Non-metal
______ is the smallest particle of an element.
You are provided with a fine white coloured powder which is either sugar or salt. How would you identify it without tasting?
Atoms have a radius of the order ______.
