BARU
Ukuran huruf
Lembar kerjaLesson 9 Nature of Chemical Bonds
Total soal: 10
Worksheet time: 5mins
Which is NOT true about a chemical bond?
It is the attractive force that holds atoms together.
It occurs between two atoms.
It involves all the subatomic particles of an atom.
It results in a more stable electron configuration of the atoms.
Which describes valence electrons?
They are electrons found in the innermost energy levels of an atom.
They are electrons found in the outermost energy levels of an atom.
They are sometimes involved in chemical bonding.
They may be found in any of the atom's subshells.
Which group of elements has a "full octet"?
Group IA
Group 7A
Group 2A
Group 8A
How many valence electrons does sodium have?
1
2
3
4
Which of the following elements have 6 valence electrons?
Lithium
Aluminum
Oxygen
Chlorine
In the electron configuration, 1s2 2s2 2p4, which electrons are least tightly bound to the nucleus?
Electrons in the 1s subshell.
Electrons in the second energy level.
Electrons in the 2p subshell.
Cannot be determined.
Which group of elements have the same number of valence electrons?
B, Al, C
C, N, O
O, P, S
C, Si, Ge
Why are Noble gases 'unreactive'?
They have 7 valence electrons.
They have full octet.
They exist as diatomic gases.
They want to be stable.
Which element is represented by the electron-dot structure?
Carbon
Fluorine
Neon
Nitrogen
Which element is represented by the electron-dot structure?
Carbon
Fluorine
Neon
Nitrogen
