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Elements
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Questions (1,579)
Who am I? My properties are very similar to those of sodium, I am lighter than the element that has an atomic number one less
1 answer
asked by
mary k.
445 views
Which element has the same number of electron shells as tungsten (W)? ANSWER IS: GOLD (AU)
3 answers
asked by
ludsis
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List the macro and micro elements. Describe the importance of the elements listed above
3 answers
asked by
Kando
57 views
List the macro and micro elements
3 answers
asked by
Kando
56 views
Which element has the same number of valence electrons as bromine (Br)?
(1 point) a potassium (K) b krypton (Kr) c chlorine (CI)
3 answers
asked by
deez
64 views
Which element has the same number of valence electrons as bromine (Br)?
(1 point) O potassium (K) O krypton (Kr) O chlorine (CI)
3 answers
asked by
deez
82 views
there are two naturally occurring isotopes of the element zinc. the relative abundance and mass of each are as follow
64
3 answers
asked by
000
542 views
which element has the ground-state electron configuration [Kr]5s^2 4d^10 5p^4
3 answers
asked by
Raynique
2,963 views
the alkali metals are a group of oxidation metals that decrease in melting point down the group. Halogens are non-metals that
4 answers
asked by
chelsea
968 views
rubidium is the fourth element in group 1. predict the following properties of rubidium and its compunds:
A. appearence B.
4 answers
asked by
chelsea
1,297 views
DESCRIPTION OF SILICON?
3 answers
asked anonymously
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Which key difference between carbon and silicon makes carbon better suited to forming molecules for living things?(1 point)
1.
3 answers
asked anonymously
57 views
Name one metal ion that's not multivalent.
Hydrogen?
7 answers
asked by
Damon
655 views
I was to classify these elements as metals or nonmetals----iron, cobalt, sodium, oxygen,chlorine, and helium. This is how I
3 answers
asked by
sue
724 views
How many protons, nuetrons, and electrons are in
18 2- O 8
1 answer
asked by
Meg
385 views
Why are the noble gases the least reactive elements? (1 point)
Responses They have a full valence electron shell. They have an
3 answers
asked anonymously
113 views
Neon and argon are both in Group 18 of the periodic table. Which property do they most likely share?(1 point) Responses silver
3 answers
asked by
trippie
56 views
Which element has chemical properties that are most similar to the chemical properties of Sulfur, S?
7 answers
asked by
Lettuce?
63 views
The element platinum has ccp packing with a face-centered cubic unit cell. The density of platinum is 21.5 g/cm3. Calculate the
3 answers
asked by
tweety
751 views
There are three stable forms of neon: neon-20, neon - 21 and neon-22. Which statement is true? (1 point)
Their number of protons
15 answers
asked by
len
128 views
There are three stable forms of neon: neon-20, neon-21, and neon-22. Which statement is true?(1 point)
Responses Their number of
4 answers
asked anonymously
80 views
Which element has atoms with valence electrons in a higher energy level than those of calcium (Ca)?
(1 point) Responses oxygen
2 answers
asked anonymously
60 views
are these the most electronegative elements in order?
F O N Cl Br C S I P H
3 answers
asked by
em
859 views
Stable Ions Quick Check
4 of 54 of 5 Items Question Potassium’s atomic number is 19, and its atomic mass is approximately 39.
2 answers
asked anonymously
74 views
Which element has six valence electrons?
(1 point) Responses lead (Pb) carbon (C) oxygen (O) phosphorus (P)
2 answers
asked anonymously
33 views
There are three stable forms of neon: neon-20, neon-21, and neon-22. Which statement is true?(1 point)
Responses Their atomic
2 answers
asked anonymously
61 views
Four elements account for over 90% of the matter of things. What are the elements?
2 answers
asked anonymously
18 views
Use the following answers for questions 1 - 3.
(A) F (B) S (C) Mg (D) Ar (E) Mn 3. Forms oxides that are common air pollutants
3 answers
asked by
Rachel
587 views
Hi,
can you tell me what the valency of Aluminium and Selenium? hi i was going to pose that question im glad you did are you
3 answers
asked by
Angelika
441 views
Neon and argon are both in group 18 of the periodic table.which property do they most likely share?
Silver color Metallic texture
3 answers
asked anonymously
66 views
What property of nonmetallic elements makes more likely to gain electrons than lose electrons?
Non-metals already have outside
3 answers
asked by
Bryan
732 views
Name an element that has 5 electrons in the third energy level. How do i determine the third energy level
Row<b> three</b> on the
3 answers
asked by
Bryan
1,325 views
Question 1: What is the chemical symbol for sodium?
Responses 1) Na 2) N 3) NA 4) sodium
25 answers
asked by
Clueless
76 views
What is the atomic number of carbon?
6 12 12.011
2 answers
asked anonymously
23 views
Why are the noble gases the least reactive elements? (1 point)
2 answers
asked anonymously
69 views
Which element does not have the same number of electrons in its outermost shell as the other elements in its group?
2 answers
asked anonymously
47 views
Which is the heaviest element produced in large stars by nuclear fusion near the end of their life cycle?
a helium b iron c
2 answers
asked anonymously
63 views
Which of these is a light element?
a lithium b iron c carbon d oxygen
2 answers
asked anonymously
44 views
How many grams of magnesium would be a typical amount in a 60.-kg adult?
2 answers
asked anonymously
43 views
Classify the following as metals,metal looks, or nonmetals
chlorine Sulfur Phosphorus Potassium germanium cobalt nickel
2 answers
asked anonymously
50 views
notes on metals and non metals
2 answers
asked anonymously
23 views
notes on metals and non-metals. include their properties, reactivity and their arrangements on the periodic table
2 answers
asked anonymously
47 views
A halogen with a higher atomic number than arsenic
2 answers
asked anonymously
37 views
A noble gas with a lower atomic number than barium
2 answers
asked anonymously
39 views
A noble gas with a higher atomic number than thallium
What is the element
2 answers
asked anonymously
35 views
Use the list to answer the question.
potassium, Group IA calcium, Group IIA iodine, Group VIIA neon, Group VIIIA Which two
2 answers
asked anonymously
77 views
Why are the noble gases the least reactive elements? (1 point)
Responses They have an empty inner electron shell. They have an
2 answers
asked by
moo
69 views
What class of elements includes all of the elements that are gases at room temperature?
metalloids metals nonmetals
2 answers
asked anonymously
55 views
Which class of elements is most effective at conducting electricity and heat?
metalloids nonmetals metals
2 answers
asked anonymously
53 views
Element X is a poor conductor of heat, has a low boiling point, and is a brittle solid at room temperature. Where on the
2 answers
asked anonymously
52 views
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