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Atomic Structure
Page 2
Questions (4,403)
How do I calculate the effective nuclear charges for Ga3+ and Ga?
4 answers
asked by
Kate
981 views
the electronic configuration of element x 2 8 8 1 and y 2 7 and write the formula of the compound formed when they combine
7 answers
asked by
john
2,222 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
514 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
1,223 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
476 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
76 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
78 views
Which are particles that make up the nucleus of an atom? Select the two correct answers. (1 point)
A. electrons B. bozons C.
4 answers
asked by
idk
155 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.
432 views
Boron is used to dope 1 kg of germanium (Ge). How much boron (B) is required to establish a charge carrier density of
1 answer
asked by
Ray
436 views
calculate the number of atoms in the following masses.
a) 54.0g of aluminum b) 69.45 g of lathanum c) 0.697 g of gallium d) 0.000
2 answers
asked by
john
959 views
How many H atoms are present in 7.2g of propane, C3H8?
2 answers
asked by
PJcotieboi
584 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
45 views
Which statement about an atom is correct?(1 point)ResponsesThe electron has a negative charge and is found outside of the
1 answer
asked by
dee
33 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
59 views
Which are particles that make up the nucleus of an atom? Select the two correct answers. (1 point)
Responses protons protons
1 answer
asked anonymously
44 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
31 views
a.
When the effective nuclear charge felt by the valence electrons is low b. When the effective nuclear charge felt by the
1 answer
asked by
Which of the options explains low ionization energ
23 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
26 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
23 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
2,299 views
A carbon atom's nucleus and its electrons become separated by 20nm. How much work does it take to separate them in Joules? In
5 answers
asked by
Alice
1,463 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
5,948 views
Bromine has two naturally occurring isotopes. Bromine-79 has a mass of 78.918 amu and is 50.69% abundant. Using the atomic mass
7 answers
asked by
Anonymous
15,836 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
12,866 views
One atom of water + one atom of water
15 answers
asked anonymously
119 views
What are moles in chemistry
7 answers
asked by
Bonia
90 views
Define isotope
3 answers
asked by
Bonia
80 views
Which atom is most likely to form a 3+ ion
2 answers
asked by
Bonia
122 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
697 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
6,095 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
2,324 views
A nitride ion has how many electrons
2 answers
asked by
Bonia
99 views
Describe the changes that have happened to the model of the atom over time. (6)
2 answers
asked by
....
94 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
1,659 views
Number of chlorine atoms present in the MgCL2 produced which is 5.90
4 answers
asked by
Bonia
108 views
how many atoms are in 25 moles of carbon
2 answers
asked by
z
84 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
3,815 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
1,061 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
17,351 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
592 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
100 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
103 views
The diameter of four different types of atoms are given below.
Atom A:1.35x10^-7 mm; Atom B:1.80x10^-7 mm; Atom C:6.00x10^-8 mm;
2 answers
asked anonymously
98 views
what is mole
1 answer
asked by
Shalom Mbaa
66 views
what are the neutrons of 226/88
1 answer
asked by
boopboooooop
115 views
How many electron is found in deuterium?
4 answers
asked anonymously
58 views
1. What is the smallest part of all matter called? (1 point) *
a. Element b. Atom*** c. Molecule d. Compound 2. Which of the
4 answers
asked by
Anon
1,717 views
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