The bond formed between two elements with electron configurations 1s2 2s2 2p6 3s2 and 1s2 2s2 2p4 is
metallic
covalent
dative
ionic
Correct answer is D
No explanation has been provided for this answer.
Which of the following molecules is held together by hydrogen bond?
CH4
HBr
H2SO4
HF
Correct answer is D
No explanation has been provided for this answer.
The shape of the carbon (lV) oxide molecule is
pyramidal
linear
angular
tetrahedral
Correct answer is B
No explanation has been provided for this answer.
carbon-14
phosphorus-32
cobalt-60
iodine-131
Correct answer is C
No explanation has been provided for this answer.
What volume of carbon (ll) oxide is produced by reacting excess carbon with 10 dm3 of oxygen?
5 dm 3
20 dm 3
15 dm 3
10 dm 3
Correct answer is B
No explanation has been provided for this answer.