Which statement describes atomic radii as one moves from top to bottom within a group?

Physics

1 answer:

skad [1K]4 years ago

8 0

Answer:

a.The atomic radii increases from top to bottom within a group.

Explanation:

We know that

When we move from top to bottom in a group then the atomic radii increases When we move from top to bottom in a group then number of shell increases.

Therefore, the distance of electron in outermost shell from the nucleus is also increase.Hence, the atomic radii increases.

But when we move from left to right in a group then nuclear pull increases because number of electron increases in the same shell.

Therefore, size of atom decreases and atomic radii decreases.

Hence, the atomic radii increases as one moves from top to bottom within a group.

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Wewaii [24]

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A girl throws a ball of mass 0.8 kg against a wall. The ball strikes the wall horizontally with a speed of 11 m/s, and it bounce

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Answer:

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Explanation:

we know that:

F*t = ΔP

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3 years ago

A geosynchronous Earth satellite is one that has an orbital period of precisely 1 day. Such orbits are useful for communication

koban [17]

Answer:

r = 4.24x10⁴ km.

Explanation:

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$\frac{T_{1}^{2}}{T_{2}^{2}} = \frac{r_{1}^{3}}{r_{2}^{3}}$

<em>where T₁: is the orbital period of the geosynchronous Earth satellite = 1 d, T₂: is the orbital period of the moon = 0.07481 y, r₁: is the radius of such an orbit and r₂: is the orbital radius of the moon = 3.84x10⁵ km. </em>

From equation (1), r₁ is:

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