The number of nucleons is the
A) atomic number
B) mass number
C) number of neutrons
D) number of protons
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If number of electrons in M-shell is half of K-shell then atomic number and name of element.
B) 11, Sodium
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Give reason : The approximate atomic mass in Daltons is numerically equal to the number of nucleons in the atom.
The electrons possess negligible mass. They do not contribute much to the mass of an atom. Therefore, the entire mass of an atom is supposed to be present in the nucleus...
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How is an atom of an element ‘X’ having atomic number ‘Z’ and atomic mass number ‘A’ represented?
An atom of an element ‘X’ having atomic number ‘Z’ and atomic mass number ‘A’ is represented as : \(^A_ZX\)
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As we go from left to right in a period the atomic number and atomic radius
C) atomic number increases and atomic radius decreases
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Carbon (Z=6) is the element of group-IVA of periodic table. Which of the following is the atomic number of next number in the group
Correct option is B) 14
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The nucleons are A) protons and electrons
C) protons and neutrons
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The number of nucleons is called ………….. of the atom.
B) atomic mass number
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Match the following. Set – I P) Atomic number (Z) Q) Atomic mass number
D) P – S, Q – U, R – T
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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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