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Ede4ka [16]
3 years ago
10

Rank the nonmetals in each set from most reactive (1) to least reactive (3). bromine chlorine iodine

Chemistry
2 answers:
Mice21 [21]3 years ago
7 0

Answer:

1. Chlorine 2. Bromine 3. Iodine

Explanation:

Anettt [7]3 years ago
3 0

Answer:

The answer is b

Explanation:

have common properties and are good conductors of heat and electricity. They reflect light and are malleable, and ductile.

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PLEASEE HELP ME! PLS PLS I NEED IT NOW PLS!
Vladimir [108]

iron Bars form a solenoid when wrapped in a coil by a current carrying copper conducting wire .

copper coils generate a magnetic field when a current is passed through the coil . according to the helmholtz law.

6 0
2 years ago
Enter a balanced nuclear equation for the production of lead-212, used in the treatment of some cancers, from the beta decay of
MariettaO [177]

Answer:

\frac{212}{81}Tl ------>\beta  + \frac{212}{82}Pb

Explanation:

Beta emission involves the conversion of a neutron to a proton, an electron and a neutrino. This leads to a reduction in the neutron-proton ratio.

During a beta emission, the mass number of the parent and daughter nuclei remain the same. The atomic number of the daughter nucleus increases by one unit above that of the parent nucleus as we can see from the equation.

Hence, the daughter nucleus is found one place after its parent in the periodic table.

8 0
2 years ago
How do you determine the percent yield of a chemical reaction?
valentinak56 [21]

Answer:

percentage yield =[ experimental yield / theoretical yield] x 100

Explanation:

7 0
3 years ago
The isotope of an unknown element, X, has a mass number of 79. The most stable ion of this isotope has 36 electrons and has a 22
Tema [17]

Answer:

A) False

B) True

C) True

D) True

Explanation:

A) False. If the charge of the atom is +2 means that you have two protons more than number of electrons. If you have 36 electrons you must have <em>38 protons.</em> Also, the electrons are not in the nucleus.

B) True. The isotope of X contains 38 protons, two more than the electron number.

C) True. The mass number is the number of protons + number of neutrons.

If the mass number is 79 and there are 38 protons you must have 41 neutrons.

D) True. You can now the identity of the atom with the number of protons that is the same than atomic number. The strontium, Sr, is the atom with 38 as atomic number.

I hope it helps!

3 0
3 years ago
1. Calculate the average atomic mass of rubidium. Rubidium has two isotopes, 85Rb and 87Rb. 85Rb has an atomic mass of 84.912 am
DiKsa [7]
Just use labels I’m lazy

5 0
2 years ago
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