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Question
Fill in the blanks :
(a) Dalton said that ___ ___ ___ ___ ___ could not be divided.
(b) An ion which has a positive charge is called a ___ ___ ___ ___ ___
(c) The outermost shell of an atom is known as ___ ___ ___ ___ ___
(d) The ___ ___ ___ ___ ___ of an atom is very hard and dense.
(e) Neutrons are ___ ___ ___ ___ ___ ___ particles having mass equal to that of portons.
(f) Isotopes are the atoms of ___ ___ ___ ___ ___ ___ element having the ___ ___ ___ ___ ___ ___ atomic number but ___ ___ ___ ___ ___ ___ mass number.
Fill in the blanks :
(a) Dalton said that
(b) An ion which has a positive charge is called a
(c) The outermost shell of an atom is known as
(d) The
(e) Neutrons are
(f) Isotopes are the atoms of
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Solution
(a) Dalton said that atoms could not be divided
(b) An ion which has a positive charge is called a cation.
(c) The outermost shell of an atom is known as valence shell.
(d) The nucleus of an atom is very hard and dense.
(e) Neutrons are neutral particles having mass equal to that of protons.
(f) Isotopes are the atoms of an element having the same atomic number but a different mass number.
(b) An ion which has a positive charge is called a cation.
(c) The outermost shell of an atom is known as valence shell.
(d) The nucleus of an atom is very hard and dense.
(e) Neutrons are neutral particles having mass equal to that of protons.
(f) Isotopes are the atoms of an element having the same atomic number but a different mass number.
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