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Atomic number-Gr9

Quiz by REENA GOYAL

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Q 1/5
Score 0
the number of protons in an atom is called its__________________
29
atomic number
symbol
atomic mass
mass number

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5 questions

Show answers

Q1
the number of protons in an atom is called its__________________
atomic number
symbol
atomic mass
mass number
30s
Q2
the sum of protons and neutrons in an atom is called ________________________
mass number
molecular mass
atomic number
atomic mass
30s
Q3
Mass no - atomic no =___________________
no of alpha particles
no of neutrons
no of protons
no of electrons
30s
Q4
the mass of ________________________ is negligible.
atom
proton
neutron
electron
30s
Q5
atoms of the same element will always have same atomic number
true
not always
false
can't say
30s

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