WorksheetsAtomic Structure
Total questions: 20
Worksheet time: 13mins
What is the core of the atom called?
nucleatoid
brain
nucleus
nucloid
What is the name of the positively charged particle that has a amu of 1 called?
positron
proton
electron
neutron
what charge does an atom have overall?
positive
negative
none
which of the following is correct?
the number of positive charges is equal to the number of neutral charges
an atom is neutral because the number of negative charges is equal to the number of positive charges
what charge does the nucleus have ?
none
negative
positive
what is the electron arrangement of sodium?
2,8
2,4
2,8,7
2,8,1
What group does chlorine belong to ?
alkali metals
transition metals
halogens
noble gases
Which one is very unreactive?
helium
fluorine
sodium
calcium
what is the chemical formula for carbon monoxide
CO2
CO
CO3
What is the valency for oxygen?
2
4
6
8
how many neutrons does this isotope of chlorine have ?
35
17
18
19
what element is this?
lithium
sodium
hydrogen
helium
what is the charge on a neutron?
positive
neutral
negative
which of the following would have the same electron arrangement?
a magnesium atom and a neon atom
a potassium ion and a chloride atom
a sulfur ion and an argon atom
isotopes have the same atomic number but different mass number what else would be different?
number of protons
number of electrons
number of neutrons
how many electrons would this aluminium ion have ?
10
13
27
3
which of the following is NOT true
the oxygen ion has 8 protons
the oxygen ion has 10 electrons
the oxygen ion has 8 electrons
the oxygen ion's mass number is 16
what type of bonding is present in lithium carbonate?
ionic
covalent
what elements are present in sodium sulfate?
sodium and sulfur
just sodium
just sulfur
sodium, sulfur and oxygen
Chlorine has two isotopes, 35Cl and 37Cl. If the R.A.M. of chlorine is 35.5, which is the most common isotope?
35
37
