1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
irakobra [83]
3 years ago
12

Find the element that has the same chemical properties as magnesium,but fewer protons

Chemistry
1 answer:
sergejj [24]3 years ago
7 0
Beryllium

Elements with the same chemical properties have the same number of electrons in their highest occupied shell. Magnesium has two electrons in its highest occupied shell, and the only element with two electrons in its highest occupied shell and less total electrons than magnesium is beryllium

You might be interested in
1) When solid Fe metal is put into an aqueous solution of NiSO4, solid Ni metal and a solution of FeSO4 result. Write the net io
k0ka [10]
Fe + NiSO4 ----> FeSO4 + No


NaF + HI ---> NaI + HF
7 0
2 years ago
Polonium crystallizes in a simple cubic unit cell with an edge length of 3.36 Å.
Diano4ka-milaya [45]

a. The unit cell is the smallest group of atom which have overall symmetry of a crystal, and from which is the entire letters can be buled built up by repetition in 3 dimensions.

b. The volume(v) of the unit cell is equal to the cell edge length (a)cubed.

c. density of polonium is 9.32g/cm3.

8 0
2 years ago
Attempt 3 An irregular lump of an unknown metal has a measured density of 5.50 g/mL. The metal is heated to a temperature of 153
shepuryov [24]

Answer:

i think it's 20.0mL

Explanation:

i learned this question in class

4 0
3 years ago
Which of the following is NOT a variable property for a gas?
Alex_Xolod [135]
Mass, air has that. Since what fills up a balloon? A gas
Shape, it has no definite shape. This one is accurate, it has no definite shape, it takes the shape of the object it's in.
Volume, does air take up space? If it does then yep. Balloon example/
Density, yes it does, because it's tightly wounded up.

D
5 0
3 years ago
Read 2 more answers
HELP!!!
vladimir2022 [97]

Answer:

2.5 × 10⁻⁵ M H₃O⁺ and 4.0 × 10⁻¹⁰ M OH⁻.

Explanation:

<em>∵ pH = - log[H₃O⁺]</em>

∴ 4.6 = - log[H₃O⁺].

∴ log[H₃O⁺] = - 4.6.

∴ [H₃O⁺] = 2.51 x 10⁻⁵.

∵ [H₃O⁺][OH⁻] = 10⁻¹⁴.

[H₃O⁺] = 2.51  x 10⁻⁵ M.

∴ [OH⁻] = 10⁻¹⁴/[H₃O⁺] = 10⁻¹⁴/(2.51  x 10⁻⁵ M) = 3.98 × 10⁻¹⁰ M ≅ 4.0 × 10⁻¹⁰ M.

<em>So, the right choice is: 2.5 × 10⁻⁵ M H₃O⁺ and 4.0 × 10⁻¹⁰ M OH⁻.</em>

4 0
3 years ago
Read 2 more answers
Other questions:
  • Helpmeh on this question
    12·2 answers
  • The​ half-life of​ carbon-14 is 5600 years. if a piece of charcoal made from the wood of a tree shows only 6363​% of the​ carbon
    10·1 answer
  • What are water droplets at least 0.5 millimeters in diameter?
    7·1 answer
  • Im teaching myself chemistry and need a guide. anyone game?
    15·1 answer
  • What is the percent composition of NaCl? Show all work please
    5·1 answer
  • Which of the following is not produced in
    10·2 answers
  • How many different sets of equivalent protons are there for para-xylene (1,4-dimethylbenzene)? only 1 two three four?
    13·1 answer
  • The symbol equation for combustion of a hydrocarbon is shown below. What number will go before the oxygen reactant when
    15·1 answer
  • HELPPP PLZZ :/
    13·2 answers
  • PLEASE HELP
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!