Answer:Kg•m/s
Explanation:the SI unit for momentum is kg•m/s
Momentum=mass x velocity
Unit for mass=kg
Unit for velocity=m/s
Therefore they unit for momentum is kg•m/s
Answer:
Silver has greater electronegativity (pull on electrons) than copper, so it will be reduced rather than oxidized. Silver ions will plate out on copper metal. Sir the coating of iron with copper surface can be referred as IRON-COPPER PLATING.
Explanation:
Iron is used for the electroplating of so copper because iron falls above copper in the electrochemical series whereas silver will fall off below the copper in electrochemical series that makes it not reliable for the electroplating purpose
Answer:
(a) (B)
Explanation:
We have given the the speed of the electron =10^6 m/sec
The time period of the electron is given by where r is the Bohr radius, which is equal to
So time period
(A) We know that current
(B) Magnetic moment is given by , where I is current and A is area
So
Answer: bismuth and nitrogen, because they have the same number of valence electrons
Explanation:
Elements are distributed in groups and periods in a periodic table.
Elements that belong to same groups will show similar chemical properties because they have same number of valence electrons.
The number of valence electrons in Bismuth and nitrogen are 5 and thus thus they will show similar chemical properties and thus belong to the same group.
The atomic masses of elements in a group will differ drastically.
The group number has got nothing to be the isolation year.
Thus bismuth and nitrogen belong to same group because they have the same number of valence electrons