Physical Properties of Group 2 Elements
Science
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9 questions
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•almost 7 years agoQuestion 1
Multiple Choice
1 point
What does group 2 refer to ?
A.Alkaline Metals
B.Alkaline Earth Metals
C.Metalloid
D.Transition Metal
Question 2
Multiple Choice
1 point
What subshell does the two outer electrons occupy ?
A.P
B.D
C.F
D.S
Question 3
Multiple Choice
1 point
What element has the electronic configuration 1s2 2s2 2p6 3s2 3p6 4s2 ?
A.Be
B.Ca
C.Mg
D.Sr
Question 4
Multiple Choice
1 point
How do you calculate the Metallic Radius ?
A.the distance between our class and surau
B.half the distance between nuclei in a giant metallic lattice
C.the distance between nuclei in a giant metallic lattice
Question 5
Multiple Choice
1 point
What is the distance between the nuclei for Calcium if its metallic radius is 0.197 nm ?
A.0.0985 nm
B.0.394 m
C.0.197 nm
D.0.394 nm
Question 6
Multiple Choice
1 point
Why does melting point decrease going down group 2 ?
A.The distance between the positive ions and delocalised electrons increases
B.The electrostatic attractive forces between the positive ions and delocalised electrons decreases
C.The metallic bonding weaken as the atomic size increase
Question 7
Multiple Choice
1 point
What does the graph refer to ?
A.Ionization energy of group
B.Density of group 2
C.Electronegativity of group 2
D.Melting point of group 2
Question 8
Multiple Choice
1 point
Why the atoms in group 2 increase in size further down the group ?
A.Because the density decreases down the group
B.The numbers of energy levels increase
C.The attraction between the valence electron and nucleus increase
Question 9
Multiple Choice
1 point
Out of these elements, which has the lowest density ?
A.Mg
B.Ca
C.Be
D.Sr
E.Ba