The atoms of same element which have same numbers of protons, but have different number of neutrons are called ………………….
A) Isobars
B) Isotopes
C) Isotones
D) Isomers
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If an element ‘X’ has 6 protons and 8 neutrons, then write its representation.
The representation of the given element is \(_6^{14}X\).
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Three elements Q, R and T have mass number 40. Their atoms contain 22, 21 and 20 neutrons respectively.
Mass number (A) = Number of protons (Z) + Number of neutrons (N). A = Z + N ∴ Z = A – N For the given three elements, A = 40. Values of their...
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Find out the number of protons, electrons and neutrons in the nuclide
For the given nuclide, Atomic number, Z = 18, Mass number, A = 40 Number of protons = Number of electrons = Z = 18 Number of neutrons (N) = A – Z = 40...
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The number of positive charges (protons) in the atom of an element is called………………
A) Atomic number
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The number of electrons, protons and neutrons in ^(31)P^(3-) ion is respectively ……………
Correct Option is : (C) 18, 15, 16 Atomic Number = Number of Protons Mass Number = Number of Protons + Number of Neutrons Number of Electron = Atomic Number -(Number of Charges) Therefore, Number of...
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The number of electrons, protons and neutrons in ^(31)P^(3-) ion is respectively ……………
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The property of an element to exist in two or more physical forms with same chemical properties but different physical properties is called
C) allotropy
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The combining capacity of atoms of an element with the atoms of other element is called its valency. Based on valency the odd one is
Correct option is C) Helium
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In a senior secondary school,80 students play football or hockey.The number that play football is 5 more than twice the number that play hockey.If 15 students play both games and every student in the school plays at least one game,find (i)the number of students that play football (ii)the number of students that play football but not hockey (iii)the number of students that play hockey but not football.
I thought F or H = 80 is giving by n(F u H) = n(F) + n(H) - n(F n H)
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