>> Activity 4 Test yourself Cognitive levels 1-2
Building a Periodic Table
1 Use the clues to place the symbols in the table below.
A: the most reactive metal in this list
B: a non-metal that can make four bonds
C: a yellow solid that is a non-metal
D: a noble gas with two protons
E the lightest alkali metal
F: a member of the alkali earth metals with 12 neutrons
G: a metalloid in Group 13
H: gas in Period 2 that is used in combustion reactions
1: a semiconductor in Period 3
J: a noble gas with the configuration 152 252 2p 3s 3p
K: the most common gas in the atmosphere with five valence electrons
L: a halogen in Period 3
M: a yellowish gas that forms an ion with a -1 charge
N: a light, silvery metal with a valency of 3
0: an element with 4 protons
P: an element with the smallest atoms
Q: an element with the notation 'Q
R: a gas used in street-lights and lighted signboards
2 Write the correct chemical symbol for A-Rin Question 1.​