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प्रश्न
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 ?
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उत्तर
Does the particle have an excess of electrons or a deficiency of electrons = excess of electrons
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संबंधित प्रश्न
Define: Relative atomic mass
Fill in the blank
If an atom loses an electron, it acquires ______ a charge.
Fill in the blank
A deficiency of electrons produces a ________ charge.
Name the three subatomic particles present in an atom.
What value has been given to the mass of this reference atom ?
An atom of element E contains 3 protons, 3 electrons and 4 neutrons :
(a) What is its atomic number?
(b) What is its mass number?
(c) Write the electronic configuration of the element E.
(d) State whether element E is a metal or non-metal. Why?
(e) What type of ion, cation or anion, will be formed by an atom of element E? Why
(f) Write the symbol of the ion formed by an atom of element E.
(g) What could element X be?
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(a) What is the atomic number of the element?
(b) State whether element Z is a metal or a non-metal.
(c) What type of ion (if any) will be formed by an atom of element Z? Why?
(d) What is special about the outermost electron shell of the atom of this element?
(e) Give the name and symbol of element Z.
(f) Name the group of elements to which Z belongs.
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Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
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Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
Which element will gain electron?
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Which will form negative ion?
Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
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The smallest particle of a substance – capable of independent existence and which retains the characteristics of the substance.
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Metalloid
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