2 years ago

Why are there only two elements in the first period of the periodic table?(1 point)

1 answer:

6 0

Answer:

because only two electrons can fit in the first orbit around the nucleus, and each period on the table is organized by number of orbits

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SOVA2 [1]

Well 200 doubled or (x2)=400 if that’s what it means

7 0

2 years ago

Free_Kalibri [48]

1.c
2.b
3.a
4.c
5.b
I hop this helps

8 0

3 years ago

asambeis [7]

Answer:

What does ur question mean can u explain me

7 0

2 years ago

Tamiku [17]

Answer:

So the mass of the second object M will be 1.951 kg

Explanation:

We have given mass of the first object $m_1=3.5kg$ and its velocity $v_1=8.1m/sec$

Mass of the second object $m_2=M$ it is at rest so its velocity $v_2=0$

From conservation of momentum we know that

Initial momentum = final momentum

So $m_1v_1+m_2v_2=(m_1+m_2)v$

$3.5\times 8.1+M\times 0=(3.5+M)5.2$

$28.35=18.2+5.2M$

M = 1.951 kg

8 0

2 years ago

yaroslaw [1]

The velocity of the car after it accelerates for 25 seconds would be 820.2 ft/s or 250 m/s

4 0

3 years ago