MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Earn 100
Sketch the structure of an atom showing the nucleus and electron shells.
Important Questions on Atoms and Elements
MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Name the first elements of the periodic table, in order of proton number, and give their symbols.
MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Sketch the electron distribution for any of one the first elements of the periodic table, when you are given the proton number.
EASY
Upper Secondary: IGCSE
IMPORTANT
Define the term valency electron.
MEDIUM
Upper Secondary: IGCSE
IMPORTANT
State the connection between the number of valency electrons and the group number in the periodic table.
MEDIUM
Upper Secondary: IGCSE
IMPORTANT
State the connection between the number of electron shells and the period number in the periodic table.
MEDIUM
Upper Secondary: IGCSE
IMPORTANT
How many outer-shell electrons are there in the atoms of group elements?
MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Explain why group elements are non-reactive.
MEDIUM
Upper Secondary: IGCSE
IMPORTANT
Give atleast five key differences between metals and non-metals.
