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Vaselesa [24]
3 years ago
11

What is common to all elements in the same group on the periodic table? Their properties are very different.

Chemistry
2 answers:
Mrac [35]3 years ago
7 0
Hello,

<span>B.They have the same number of valence electrons. </span>
sattari [20]3 years ago
7 0
B. They have the same number of valence
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Scientists use tiltmeters to locate hidden faults. <br> true or false<br> answer: false
kari74 [83]
Hi, 
your answer would be false. But it seems you already knew that. 

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-Dawn
7 0
3 years ago
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K-40 is a radioactive isotope of potassium that undergoes beta decay. What is the product of this decay
Aleks [24]

Answer:

⁴⁰₂₀Ca + ⁰₋₁e

Explanation:

Beta decay:

Beta radiations are result from the beta decay in which electron is ejected. The neutron inside of the nucleus converted into the proton an thus emit the electron which is called β particle.

Properties of beta radiations:

The mass of beta particle is smaller than the alpha particles.

They can travel in air in few meter distance.

These radiations can penetrate into the human skin.

The sheet of aluminium is used to block the beta radiation

⁴⁰₁₉K → ⁴⁰₂₀Ca + ⁰₋₁e

The beta radiations are emitted in this reaction. The one electron is ejected and neutron is converted into proton.

5 0
3 years ago
Based on your knowledge of chemical equations, what do you know for sure
Artyom0805 [142]
Pretty sure it shows a chemical reaction
5 0
3 years ago
Hey please answer this for me thanks.
Aleks [24]

Explanation:

Moles of N2 = 84/28 = 3.0mol

Moles of H2 = 29/2 = 14.5mol

Hence amount of ammonia produced = 6.0 * 17 = 102g.

7 0
3 years ago
The process n01 → p11 + β−10 n 0 1 → p 1 1 + β - 1 0 represents a(n) _____.
polet [3.4K]

Answer:

  • <u><em>beta decay</em></u>

Explanation:

The <em>process</em> is represented by the nuclear equation:

  • ^1_0n → ^1_1p+^0_{-1}\beta

Where:

  • n represents a neutron,
  • p represents a proton, and
  • β represents an electron.

The superscripts to the leff of each symbol is the mass number (number of protons and neutrons), and the subscript to the left means the atomic number (number of protons).

Then, in this process a neutron is being transformed into a proton by the emssion of an electron (from inside the nucleus of the atom).

This electron is named beta (β) particle, and the process is called <u><em>beta decay</em></u>, because the neutron is changing into other subatomic particles.

5 0
3 years ago
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