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प्रश्न
A compound containing one atom of carbon and two atoms of oxygen is ______.
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उत्तर
A compound containing one atom of carbon and two atoms of oxygen is CO2
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संबंधित प्रश्न
Tick the most appropriate answer.
Who discovered that radioactive rays are given out by uranium?
- Henri Becquerel
- Marie Curie
- Pierre Curie
- Schmidt
Define:- Atom
Define:- Radicals
Write the names of the elements present in the:-
Glucose
What is the maximum number of electrons present in:
1. first shell
2. second shell
3. third shell and
4. fourth shell
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
What is the mass number of X?
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
What is the atomic numebr of X ?
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.
One nm is equal to :
Give brief information of three subatomic particles with reference to electrical charge, mass and location.
Electron, proton, neutron are the types of ______ in an atom.
Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
Which element will gain electron?
Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
Which will form positive ion?
Define the following term with an example.
Metal
Which of the following statements made by Dalton has not undergone any change?
______ is the smallest particle of an element.
A change in the physical state can be brought about
You are provided with a fine white coloured powder which is either sugar or salt. How would you identify it without tasting?
Write any two observations which support the fact that atoms are divisible.
