Worksheetsulangkaji chap 3
Total questions: 10
Worksheet time: 8mins
Element X are in group 4 & period 4. Write its electronic configuration.
( SPACING,HURUF KECIK)
(a)
Ion X3+ has the electronic configuration of 1s2 2s2 2p6 3s2 3p6 3d10 . Determine the position of element X in the periodic table
Group 10
Period 3
Group 13
Period 4
d-block
p-block
Group 1
Period 4
Arrange the species in order of increasing ionic radii
Na+ < Mg2+ < Al3+ < Si4+
Si4+ < Al3+ < Mg2+ < Na+
Li+, Be2+ and B3+ ions are isoelectronic species because they have same __________(1).
Across the period, proton number _______(2) from Li to B. The effective nuclear charge also
increases within the same shell (n=2), from Li+ to B3+ ion.
The remaining electrons in B3+ ion are held more tightly to the nucleus.
Thus, ionic radius _______(3) from Li+ to B3+.
(tulis jawapan terus, tak perlu nomborkan. huruf kecik)
(a)
which of the element has the highest second ionisation energy?
P
Q
R
which electron comes from inner shell?
first
second
third
fourth
fifth
Write the valence electronic configuration for element B
(huruf kecik & space)
(a)
state oxidation number of element B
(a)
Which of the following oxides are acidic oxide?
(huruf besar & space)
(a)
State the product when SO3 dissolves in water
(huruf besar)
(a)
