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np3 pipe np4
- non pressure pipe class np3 -np4 is used for heavy duty load
is used for medium duty load
Wiki User
∙ 11y ago
Sanjib Banerjee
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What is NP4 Hume pipe?
It is Reinforced Concrete, Heavy Duty, Non-pressure Pipes.
In groups 13 through 18 valence electrons may be in which sublevels?
Gp 13=ns2 np1 Gp 14=ns2 np2 Gp 15=ns2 np3 Gp 16=ns2 np4 Gp 17=ns2 np5 Gp 18=ns2 np6
What is the most likely charge on an ion formed by an element with a valence electron configuration of ns2 np4?
it would be probably 2-.
Where is the Big Pit in Wales?
Big Pit is South West Wales, here is the address:- Big Pit National Coal Museum Blaenavon Wales NP4 9XP
How would you relate the number of valence electron to their group number in the periodic table?
For main group chemistry, the trend followed would be as such, where "n" is the valence orbital: ns1 = group 1 ns2 = group 2 ns2 np1 = group 3 (also called group 13) ns2 np2 = group 4 (also called group 14) ns2 np3 = group 5 (also called group 15) ns2 np4 = group 6 (also called group 16) ns2 np5 = group 7 (also called group 17) ns2 np6 = group 8 (also called group 18) This rule can only be successfully applied to main group chemistry, the D and F blocks (transition metals, lanthanides and actinides) do not follow this.
How many valence electrons does an atom have from group 16?
Atoms of elements in Groups 13-18 have 10 fewer valence electrons than their groups numbers.However , helium atoms have only 2 valence electrons.
