Use the information in the table to calculate the relative atomic mass (Ar) of element Z.
Give your answer to one decimal place.
Give the number of the group to which element Z belongs
Give the number of the period to which element Z belongs
Use the information in the table to calculate the relative atomic mass (Ar) of element Z.
Give your answer to one decimal place.
Deduce the name of element Z.
Which species is an atom?
Which species is an ion with a positive charge?
Which species is an ion with a 3− charge?
State what is meant by the term atomic number
State what is meant by the term mass number.
Give the name of the central part of the atom
There are two common isotopes of boron.
11B and 10B
In terms of sub-atomic particles, give one similarity and one difference between these isotopes.
What is the particle labelled W?
State why atoms have no overall charge
A sample of lithium contains 7.60% 6Li and 92.4% 7Li.
Calculate the relative atomic mass, Ar , of this sample of lithium.
Give your answer to two decimal places.
The diagram represents an atom of element Z.
Z is not the symbol of the element.
The table shows the number of protons, neutrons and electrons in five species, V, W, X, Y and Z.
The letters represent the species but are not symbols from the Periodic Table.
Choose letters from the table to answer these questions.
Each letter may be used once, more than once or not at all.
This question is about the element boron, B.
An atom of this element contains 13 neutrons.
What is the mass number of this element?