Answer D
In alkali earth metals reacrivity increases from top to bottom (opposite of b)
This is because as you go down, the electron shells increase by 1 shell. The farther away a shell is from the nucleus, the higher its tendency to react.
D is true because the more reactive an alkali metal is, the more vigorous the reaction will be with water.
Answer:
product
Explanation: it's the product of chlorine and sodium
Newton 3rd law:
F=ma
1600=85*a
1600/85=a
a=18.82 m/s^2
Resistors 'C' and 'D' are in series. There's only one possible route for current to flow through them.
Every electron that flows through one of them has to flow through the other one.
The current (amount of charge per second) must be the same in 'C' and 'D', no matter how many ohms of resistance either one may have. <em>(answer-choice B)</em>
