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Worksheetsatomic size
Total questions: 9
Worksheet time: 5mins
What influences the atomic size of an atom across a period ?
neutron number
proton number
electron number
mass number
Which atom has a larger atomic radius based upon their relative positions on the periodic table?
Sodium
Argon
What is the definition of atomic radius?
atomic radius is the distance between 2 bonded atoms
atomic radius is the distance from the centre of nucleus to the outermost shell
atomic radius is measured in mols
The distance between the nucleus of two nitrogen atom is 140pm. What is the atomic radius of a nitrogen atom?
140pm
700pm
70pm
280pm
The shielding effect is the attraction between?
electrons and protons
protons and nucleus
nucleus and valence orbital
Which has more shielding?
Cs
K
What makes the atomic size increase down the group?
The atoms have more mass
The atoms have more protons
The atoms have more shielding effect
The atoms have more nuetrons
What will occur as we go down the group? (choose all answer that applies)
Shielding effect increase
Size of atom decrease
The attraction between the nucleus and valence electrons decrease
Shielding effect decrease
Who did not contribute to make a periodic table?
Dohereiner
Aristotle
John Newland
Dimitri Mendeleev
