The atomic number of an atom is always equal to the number of what?

1 answer:

3 0

The atomic number is always equal to the number of protons. It will be equal to the number of elections also if the atom has a neutral charge.

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What is the compound of scI2

klemol [59]

Answer:

sulfur dichloride

Explanation:

SCl2 is the chemical formula for sulfur dichloride. This compound is made of only two elements, so it is a binary compound.

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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.

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2 years ago

Under certain conditions, neon (Ne) gas diffuses at a rate of 4.5 centimeters per second. Under the same conditions, an unknown

Eva8 [605]

Mv^2 = const
m ~ 1/v^2 

(4.5/10.1)^2 = 0.198 

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3 years ago

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The light traveled from _____________________ to __________________. (What transparent materials?)

sergiy2304 [10]

Explanation:

High density medium to low density medium.

5 0

2 years ago

A force of 2,500 pounds drags a truck 30 feet in 1/2 minute.

scoray [572]

The right subject for this question is physics.

To calculate the work you use the formula:

Work = force * displacement

Work = 2500 pounds * 30 feet = 75,000 pounds - feet

To calculate the power you use the formula:

power = work / time

Power = 75,000 pound - feet / 30 seconds = 2300 pound-feet / second.

3 0

3 years ago