2 valence electrons
Explanation:
Electron configuration of nickel (Ni):
1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁸
The valence electrons are in the electronic shell with the higher principal quantum number (n). In our case, nickel have 2 electrons in the 4s², with the n = 4.
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electrons in the valence level
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Mostly gravity voloume and sometimes what it is made of
Answer:
A pure substance has only one substance while a mixture has two or more substances
Explanation:
Answer:
300m
Explanation:
step one
given data
initial speed u= 15m/s
final speed v= 45m/s
time taken to attain final speed= 10seconds
Step two:
Let us first solve for the acceleration
a= Δv/t
a= 45-15/10
a=30/10
a= 3m/s
applying the equation of motion
substituting our given data
collect like terms
2025-225=6s
1800=6s
divide both sides by 6
s=1800/6
s=300m