Cards in this guide (28)
How many electrons does oxygen have
An electrically neutral oxygen atom has eight electrons, one for
each proton in its nucleus. Two electrons are in the inner shell
and six are in the outer shell.
How many electrons does lead have
Lead has 82 Protons, 82 Electrons, and 125 Neutrons. It also has
a melting point of 327.5 degrees C (or621.5 degrees F)
What is the mass number of an element that has 30 protons 35 neutrons and 30 electrons
What are the divisions within a shell called
The divisions within a shell are known as subshells.
What is an average atomic mass
An average atomic mass is the weighted average of the atomic
masses of the naturally occurring isotopes of an element.
Consider the silicon-29 isotope How many protons neutrons and electrons will it have
14 protons, 15 neutrons, and 14 electrons
Why should the stopper of a chemical reagent container be handled carefully
The stopper of a chemical container should be handled carefully
to avoid contact of a dangerous chemical with the skin. Careful
handling is also key to preventing contamination.
What does the symbol PO-210 represent
The symbol Po-210 represents the isotope of Polonium with a mass
number of 210.
An imaginary element Y occurs 30 percent of the time with a mass of 57.9 amu The remaining sample of Y has a mass of 60.9 amu What is the average atomic mass of Y
The average atomic mass of Y would be 60.0 a.m.u.
The symbol Po-210 represents an
Polonium -210, this unstable isotope of Polonium (named after
Poland) is an alpha emitter with a half life of 138.376 days, it
decays into Pb.
Calculate the average atomic mass of an unknown element that has two naturally-occurring isotopes The first isotope occurs 75.47 percent of the time and has a mass of 248.7 amu The second isotope occu
the atomic mass is -(248.90)
By referring to the periodic chart indicate which is the mass number of copper
George intentionally threw a snowball directly at Chris The fact that the snowball will continue in the direction of Chris after leaving George's hand is an example of the snowball's
What is the mass number of Pb
Classify this property as homogenous or heterogenous Click on the correct answer
Classify this property as intensive or extensive height
An atom has an atomic number of 56 yet has a mass number of 137 amu Evaluation of this data indicates that the element is
Select the answer that correctly indicates the number of protons and electrons for this atom or ion Sulfide ion
16 protons and 18 electrons
How many protons neutrons and electrons will positive two ion of calcium have
20 protons and 18 electrons
The smallest part of matter that retains its own chemical properties are called
The smallest part of matter that retains its own chemical
properties is called a(n) _______.
An atom.
Can you make a scene name from my name Elle
Elle Envy
Elle Ebonize
Elle Echo
Elle Electric
Edible Elle
Elle Execute
that's all i can come up with
Elleicous
What is the atomic number of this element of PB
The atomic number for the Element Lead is 82.
How many significant digits are in 1.076000
This number has seven significant digits.
What is the mass number of this element 82 pb
Mass number refers to a particular isotope of 82Pb.
How many electrons and protons lithium have
The element lithium has 3 protons and 3 electrons.
How many protons and electrons are in sulfide and ion
The sulfide ion has 16 protons and 18 electrons.
How many signoficant digits are in this number 74.30
What's the adverb for deep
a word or an expression that modifies a verb, adjective, another adverb, determiner, clause, preposition, or sentence
