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Aleks [24]
2 years ago
15

I need help with this!

Chemistry
1 answer:
Natali [406]2 years ago
8 0

\boxed{ \rm{ \red2Cs + Sr(CrO4) → Cs2(CrO4) + Sr}}

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Non examples of chemical formulas
Bezzdna [24]

Answer:

1+2 = 12

Explanation:

this is a math equation, not a chemical formula

6 0
3 years ago
Need help ASAP!! Full paragraph! Will give Brainliest!!
Amanda [17]

Answer:

All elements in the same group of the periodic table have the same number of valence electrons. This made it possible to compare the valence of the alien elements to the valence of elements from our periodic table, and match the alien elements to the correct group. For example, our group 14 elements all have 4 valence electrons, so the alien element with 4 valence electrons had to be part of group 14 also.

8 0
3 years ago
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What are the safety procedures for nuclear accidents nowadays?
Zigmanuir [339]

Explanation:

Take shelter in a hard wall building

Close doors and windows cut off ventilation

4 0
3 years ago
What is the reason behind that the melting and boiling point of iron is more than that of sodium?​
sweet [91]

Answer:

As metals are giant lattice structures, the number of electrostatic forces to be broken is extremely large, and so metals have high melting and boiling points. This means that the melting point and boiling point of metals are more similar to those for ionic compounds than for covalent substances.

Explanation:

3 0
2 years ago
Synthetic, or man-made, elements typically exist for only a short time
o-na [289]
This is true. Elements past lead are radioactive, because the repulsive force of the protons cannot be overpowered by the “gluing” ability of neutrons (remember, likes repel). As more and more protons are added, generally, the elements become more unstable; for example, Bismuth, right next to lead on the Periodic Table, is radioactive, but the half life of this element is about a billion times longer than the current age of the universe, but Oganesson, element number 118, has a half life of fractions of a second.
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