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WorksheetsChemistry - Sec 2
Total questions: 16
Worksheet time: 16mins
The number of bond pairs of electrons is the same in all the following molecules, except in the molecule of ....
BF3
SO₂
BeF2
H2O
Complete :
Atomic spectra of (a) cation that apear Bluish violet in dry detection when expose it to the non illuminate region of bunsen flame
Which of the following compounds molecules contains 2 bond pairs and 2 lone pairs of electrons ?
NH3
BeF2
H₂O
H₂S
Complete :
The chemical formula of (a) deposits KCl.MgCl2.6H2O
The number of electron lone pairs in H₂O molecule equals the number of electron bond pairs in the molecule of
SO₂
BF 3
NH₂
N₂
Complete :
The strength of the (a) bond depends mainly on the number of the valence electrons of the metal
What are the numbers of the electron lone pairs and bond pairs in the central atom in PCI3 , molecule ?
3 lone pairs /2 bond pairs.
3 lone pairs / 1 bond pair.
1 lone pair / 3 bond pairs.
2 electrons lone pairs / 3 bond pairs.
Complete :
The angle between covalent bonds in Ammonia molecule is (a) degree
What is the number of each of the bond pairs and the lone pairs of electrons in the central atom of IF5 molecule?
5 bond pairs / 1 lone pair.
1 bond pair / 5 lone pairs.
65 bond pairs / 0 lone pair.
1 bond pair / 4 lone pairs.
Abbreviation AX2 represents ................... molecules
BeF2
BeCl2
CO2
BF3
The central atom carries 2 lone pairs of electrons in the molecule of
ammonia.
chlorine trifluoride.
methane.
phosphine.
Complete :
Stereostructure of methane is (a)
Which of the following molecules contains the highest number of the lone pairs of electrons ?
F₂
CH4
CO₂
H₂O
…………………. And …………………. Are examples of Hygroscope substance that absorbs water vapor from the atmospheric air .
KOH - NaNO3
NaOH - KNO3
LiOH - NaNO3
NaOH - NaNO3
Both the stereostructure and the arrangement of the electron pairs are similar in the molecule of
SO3
H₂S
NF3
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مع تحياتى أ. أشرف موسى محمد
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