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WorksheetsQUIZ 1 CHEMISTRY
Total questions: 6
Worksheet time: 3mins
Give the proton number of Calcium
20
40.078
21
41
A scientist made the following contributions in the development of the Periodic Table.
Johan W. Dobereiner
John Newlands
Lothar Meyer
Dmitri Mendeleev
Element M is placed in Group 14 and Period 3 of the Periodic Table. What is the electron arrangement of an atom M?
2.3
2.4
2.8.3
2.8.4
M, G, J, L
G, M, L, J
G, J, L, M
M, L, J, G
An atom Y with nucleon number of 23 has 12 neutrons. Which element has the same chemical properties as element Y?
[Proton number: B = 5, Mg = 12, Cl = 17, K = 19]
Boron
Magnesium
Chlorine
Potassium
Element R is located in the same group as lithium in the Periodic Table of Element. Which of the following are the properties of R?
Diatomic particle
Reacts vigorously with water
Cannot conduct electricity
High melting and boiling points
