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Atomic Structure
Page 2
Questions (4,346)
which of the following samples has the greatest number of atoms
20 million O2 molecules 0.1 mole of Fe 2.0 mole of Ar 100 g of Pb
5 answers
asked by
payton
5,449 views
An atom of gold has a mass of approximately 3.25×10^-22 grams. What is the mass of 4000 atoms of gold? Express your answer in
4 answers
asked by
Jacob
3,476 views
Potassium has atomic number of 19.Give three deductions which can be made from this statement
4 answers
asked by
Mary
490 views
An atom contains a total of 29 electrons. When the atom is in the ground state how many principle energy levels will contain
5 answers
asked by
danny123
1,604 views
Which of the following affects how strongly anions and cations are attracted to each other in a solid?
A. The nucleus B. Empty
4 answers
asked by
Morgan
2,534 views
Cobalt has a mass number of 59 and an atomic number of 27. A student wants to create a model of a cobalt atom. Which statement
5 answers
asked by
Plzz Help Jiskha Keeps updating and resetting!
3,255 views
How do I calculate the effective nuclear charges for Ga3+ and Ga?
4 answers
asked by
Kate
974 views
Which is not a ground state electron configuration?
A. 1s2 B. 1s2 2p1 C. 1s2 2s2 D. 1s2 2s2 2p1
6 answers
asked by
Ivy
2,108 views
individual : identification card :: element : __________
Which of the answer choices best completes the analogy? photon energy
6 answers
asked by
malia
3,312 views
a certain molecule contains twice as many atoms of hydrogen as oxygen and one more atom of carbon than hydrogen. If there are 21
3 answers
asked by
Matt Berman
511 views
Write a brief passage describing a neutral atom of nitrogen-14 (N-14). Describe the number of protons, neutrons, and electrons
2 answers
asked by
Joe
1,218 views
How many moles of titanium are in a sample containing 2.8 x 10^24 atoms?
1) 1.69 x 10^48 2) 4.65 x 10^43 3) 4.65 4) 0.0465 5) 48
4 answers
asked by
john doe
470 views
An atom of gold has a mass of approximately 3.25 times 10^-22 grams. What is the mass of 3000 atoms of gold?
4 answers
asked by
Thaddeus
786 views
Which statement about an atom is correct?
1. The neutron has no charge and is found outside of the nucleus 2. The proton has no
5 answers
asked by
Alana
72 views
An oxygen atom has a mass of 2.66*10 to power of-23g and a glass of water has a mass of 0.050kg use this information to answer
2 answers
asked anonymously
74 views
Calculate the radius of a tantalum (Ta) atom, given that Ta has a BBC crystal structure, a density of 16.6g/cm³, and an atomic
4 answers
asked by
Josh Baruma
571 views
The size of a hydrogen atom is about 1.2×10^−10 m across. The size of an oxygen atom is 0.000000000152 m across. What is the
7 answers
asked by
Help. I. Don't. Know. The. Answer.
422 views
How many H atoms are present in 7.2g of propane, C3H8?
2 answers
asked by
PJcotieboi
579 views
An element x has a relative atomic mass of 88. When a current of 0.5 ampere was passed through the fused chloride of x for 32
1 answer
asked anonymously
40 views
5. How many electrons can the first shell hold?
* 1 point 2 8 16 It depends on the atom.
1 answer
asked by
UNKNOWN
45 views
An atom has 17 electrons, 17 protons, and 18 neutrons.
What is false about this atom. •A. The atomic number of this atom is 18.
1 answer
asked by
Cupidsvz
53 views
A student drew atomic models of four elements. Based on these drawings, which element is the least reactive?
(1 point) Gallium ,
1 answer
asked by
yes
24 views
What types of atoms have the same number of electrons and protons?
* 1 point all atoms stable atoms ions metalloids
1 answer
asked anonymously
30 views
Which statement about this atom is FALSE? Use the Periodic Table to help you.
17 p 18 n (1 point) Responses This is a chlorine
1 answer
asked anonymously
28 views
Which model below successfully illustrates a Boron (B) atom?
(1 point)
1 answer
asked anonymously
16 views
1. In "nuclear symbol notation" what information is written as a subscript to the lower left of the elemental symbol?
A. Ionic
1 answer
asked anonymously
18 views
How many neon atoms are contained in each of the following number of moles? Be sure each of your answer entries has the correct
1 answer
asked anonymously
14 views
Proton -
key term
1 answer
asked anonymously
6 views
Iron has a density of 7.86 g/cm3 and crystallines in a body-centered cubic lattice. Show that only 68% of a body-centered
5 answers
asked by
Angie
2,294 views
How did the study of the atom contribute to our understanding of the periodic table of the elements?(1 point)
Experiments that
20 answers
asked by
Bob
5,939 views
An X-ray photon of wavelength 0.954 nm strikes a surface. The emitted electron has a kinetic energy of 935 eV.
What is the
5 answers
asked by
Amy
12,860 views
One atom of water + one atom of water
15 answers
asked anonymously
114 views
What are moles in chemistry
7 answers
asked by
Bonia
89 views
Define isotope
3 answers
asked by
Bonia
77 views
Which atom is most likely to form a 3+ ion
2 answers
asked by
Bonia
120 views
A carbon atom's nucleus and its electrons become separated by 20nm . How much work does it take to separate them in J?I found
4 answers
asked by
Maurice
694 views
1. The current atomic model would be revised if
(1 point) A• better microscopes were being used to study its structure. B•
11 answers
asked by
John Smith
6,088 views
A large number of hydrogen atoms have electrons to the n=4 state.How many possible spectral lines can appear in the emission
7 answers
asked by
dimpho
2,317 views
A nitride ion has how many electrons
2 answers
asked by
Bonia
100 views
Describe the changes that have happened to the model of the atom over time. (6)
2 answers
asked by
....
92 views
calculate the number of atoms in the following
1)13.8g of sodium 2)0.02 moles of aluminium 3)14.2g of sodium sulphate
1 answer
asked by
Shalom Mbaa
76 views
How many protons, electrons and neutrons are in the aluminum ion ?
4 answers
asked by
Mikz
1,654 views
Number of chlorine atoms present in the MgCL2 produced which is 5.90
4 answers
asked by
Bonia
105 views
how many atoms are in 25 moles of carbon
2 answers
asked by
z
80 views
Chlorine has an average atomic mass of 35.45 amu. The 2 naturally occurring isotopes of chlorine are chlorine-35 and
9 answers
asked by
Twilight lover
3,812 views
A hydrogen-like ion is an ion containing only one electron. The energy of the electron in a hydrogen-like ion is given by:
En=-(2
6 answers
asked by
Anonymous
1,060 views
I don't even know how to start this...The valence electron configurations of several atoms are shown below. How many bonds can
12 answers
asked by
Stacy
17,341 views
A sample of propane, C3H8, contains 15.1 moles of carbon atoms. How many total moles of atoms does the sample contain?
2 answers
asked by
Anonymous
588 views
Is a small group or cluster of atoms carrying a charge that keeps it's identity
a.atom b.radical c.isotope .ion
2 answers
asked by
Zipporah
99 views
One isotope of holmium, 162Ho, has a half life of 22 minutes. The half-life of a second isotope, 164Ho, is 37 minutes. Starting
2 answers
asked anonymously
100 views
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