1. Which of the following species contains a triple bond? a) HCN b) H 2 CO c) CO
ID: 704693 • Letter: 1
Question
1. Which of the following species contains a triple bond?
a)
HCN
b)
H2CO
c)
CO2
d)
N2O4
e)
C2O42?
5. Which two species are isoelectronic (identical electron configurations)?
a)
Na+ and K+
b)
Cl? and F?
c)
Ca2+ and Mg2+
d)
Al3+ and Ne
e)
P? and Ca+
6. Consider that each of the following species is in its lowest energy state. Which set contains species that all have the same electronic configuration?
a)
Na+, K+, Rb+, Cs+
b)
Mg2+, Ca2+, Sr2+, Ba2+
c)
N, O, F, Ne
d)
F?, Cl?, Br?, I?
e)
N3?, O2?, Mg2+, Al3+
a)
HCN
b)
H2CO
c)
CO2
d)
N2O4
e)
C2O42?
Explanation / Answer
Ans 1 a) HCN
The name of the molecule is hydrogen cyanide or formonitrile.
It is a linear molecule , that has hydrogen , carbon and nitrogen atoms in a sequence. The carbon bonds to hydrogen through a single bond and nitrogen through triple bond.
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