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Cloud [144]
2 years ago
11

I need help w this..

Chemistry
1 answer:
Mariana [72]2 years ago
3 0
Evaporation condensation transpiration precipitation
Emily, come to papa
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Order the elements from smallest to largest atomic number
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the largest is francium, Z=87 , or caesium, Z=55 ; and the smallest is definitely helium, Z=2 .

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Which tool is used to measure mass?
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Given that nitrogen forms three bonds with hydrogen to make <img src="https://tex.z-dn.net/?f=NH_%7B3%7D" id="TexFormula1" title
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Answer:

Three hydrogen atoms to form PH₃.

Explanation:

Hello!

In this case, since the elements belonging to the nitrogen family (N, P, As, Sb and Bi) show five valence electrons, because there are five electrons at their outer shell, it is clear that if phosphorous bonds with hydrogen, it is going to require the same amount of oxygen atoms (3) because elements having five valence electrons need 3 bonds in order to attain the octet (5+3=8).

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