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What is the atomic number of iron ?

Important Questions on Structure of The Atom

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Science>Chemistry>Structure of The Atom>Atomic Number and Mass Number
Atomic number = Number of _____= Number of electrons in an atom.
 
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Science>Chemistry>Structure of The Atom>Atomic Number and Mass Number
The isobars of elements can be separated easily by _____ means(chemical/physical).
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Science>Chemistry>Structure of The Atom>Atomic Number and Mass Number

Isotopes have different mass numbers because their nucleus contains a different number of _____.

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Science>Chemistry>Structure of The Atom>Atomic Number and Mass Number
In the notation  Al1327, the number 27 represents _____ of Al.
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Science>Chemistry>Structure of The Atom>Atomic Number and Mass Number
_____ number is never fractional. (Atomic / Mass)
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Science>Chemistry>Structure of The Atom>Atomic Number and Mass Number
All isotopes of an element have _____ valency.
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Science>Chemistry>Structure of The Atom>Atomic Number and Mass Number
In the species X1735 there are _____ neutrons. 17 / 18
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Science>Chemistry>Structure of The Atom>Atomic Number and Mass Number

Cl1735 and Cl1737 are _____.

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Science>Chemistry>Structure of The Atom>Atomic Number and Mass Number
An isotope of cobalt used in the treatment of cancer is _____ (radioactive/non-radioactive).
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Science>Chemistry>Structure of The Atom>Atomic Number and Mass Number
The total number of protons and neutrons in the nucleus of an atom is called _____.
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Science>Chemistry>Structure of The Atom>Atomic Number and Mass Number
 O816 -16 and O817-17 are the two _____ of oxygen.
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Science>Chemistry>Structure of The Atom>Atomic Number and Mass Number
Atomic number is the number of _____ present in the nucleus of an atom.
 
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Science>Chemistry>Structure of The Atom>Atomic Number and Mass Number
Isotope of uranium used in nuclear reactors is _____ metal. (Alkali / radioactive)
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Science>Chemistry>Structure of The Atom>Atomic Number and Mass Number
The sum of the total number of protons and neutrons in the nucleus of an atom is called its _____
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Science>Chemistry>Structure of The Atom>Atomic Number and Mass Number
The atoms of different elements which have the same mass number are called _____.
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Science>Chemistry>Structure of The Atom>Atomic Number and Mass Number
An isotope of iodine (I53128) is used in the treatment of _____.
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Science>Chemistry>Structure of The Atom>Atomic Number and Mass Number
The protons and neutrons are collectively called _____. (nucleus / nucleons)
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Science>Chemistry>Structure of The Atom>Atomic Number and Mass Number

An atom has atomic number 11 and mass number 23. The atom has _____ electrons.

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Science>Chemistry>Structure of The Atom>Atomic Number and Mass Number
An isotope of carbon (C614) is used in dating of _____ samples.
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Science>Chemistry>Structure of The Atom>Atomic Number and Mass Number
Number of protons and number of neutrons of an atom form its _____.