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2 years ago

Different between group IA and IIA elements

Physics

1 answer:

Mekhanik [1.2K]2 years ago

8 0

Answer:

Group IA elements have only one valency electron while Group IIA have two valency electrons.

Group IA elements have cations with higher charge density hence polarizing anions easier resulting into covalent character while Group IIA elements have cations with lower charge density hence difficulty in distorting anions resulting into a ionic character. This is due to difference in cationic radii and charges

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riadik2000 [5.3K]

Answer:

t=2.10 s

u= 47.40 m/s

Explanation:

given that

h= 21.8 m

x= 101 m

g=9.8 m/s²

Lets take horizontal speed of ball = u m/s

The vertical speed of the car at initial condition is zero ( v= 0).

We know that

$h=vt+\dfrac{1}{2}gt^2$

v= 0 m/s

$h=\dfrac{1}{2}gt^2$

now by putting the values

21.8 = 1/2 x 9.8 x t²

t=2.10 s

This is time when ball was in motion.

Now in horizontal direction

x = u .t

101 = u x 2.1

u= 47.40 m/s

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2 years ago

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wlad13 [49]

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Explanation:

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$V_{\epsilon}\propto \frac{d\phi_{B}}{dt}$

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3 years ago

What causes the bright lines seen in the emission spectrum?

Snezhnost [94]

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3 years ago

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earnstyle [38]

Answer:

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Explanation:

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