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प्रश्न
Fill in the blank
A deficiency of electrons produces a ________ charge.
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उत्तर
A deficiency of electrons produces a positive charge.
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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
TRUE \ FALSE
Cathode rays are a stream of fast moving particles that travel in random directions.
ANSWER IN DETAIL
Enlist the features of Bohr’s model of an atom. How did he correct the Rutherford’s model ?
Define:- Atom
Define:- Radicals
Write the names of the elements present in the:-
Sodium hydroxide
Write the names of `("NH"_4)_2"SO"_4` compounds:
Name the particle or particles you would expect to find in :
The orbit of an atom
What is the usual symbol for (a) and electron (b) a proton, and (c) a neutron?
One nm is equal to :
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 will form positive ion?
The smallest particle of matter that can exist by itself is ______.
State true or false. If false, correct the statement.
The basic unit of an element is molecule.
Define – Atom.
Define the following term with an example.
Compound
A sample of vitamic C is known to contain 2.58 ×1024 oxygen atoms. How many moles of oxygen atoms are present in the sample?
The graphite refill used is pencil is made of element called ______.
Lead is also known as plumbum.
