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प्रश्न
1 mole of Gold and Silver contain same number of atoms.
पर्याय
True
False
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उत्तर
True
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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
WRITE SHORT ANSWER
Define an ionic compound.
WRITE SHORT ANSWER
What is radioactivity?
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
What is the mass number of X?
What are the building blocks of matter ?
An atom of an element X may be written as `""_9^4"X"`
(a) What does the figure 9 indicate?
(b) What does the figure 4 indicate?
(c) What is the number of protons in atom X?
(d) What is the number of neutrons in atom X?
(e) What is the number of electrons in atom X?
(f) How many electrons are there in the outermost shell of an atom of element X?
(g) Write the symbol of ion formed by an atom of element X.
Define the following term with an example.
Compound
Define the following term with an example.
Non-metal
Which of the following has maximum number of atoms?
An atom of Oxygen (O) and two atoms of hydrogen (H.) combine to form a molecule of ______.
