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
vesna_86 [32]
3 years ago
14

The elements in groups 1a through 7a are

Chemistry
2 answers:
Semmy [17]3 years ago
4 0

1A alkali metals

2A alkali earth metals

3B-2B transition metals

7A halogens

8A noble gases

REY [17]3 years ago
3 0
The elements in<span> groups 1a through 7a are called d. representative elements. The periodic table is organized according to increasing order of the atomic number of the elements. Groups have similar properties while the period of the elements determines the valence electrons in the outer shells.</span>
You might be interested in
The enzyme, carbonic anhydrase, is a large zinc-containing protein with a molar mass of 3.00 x10^4 g/mol. Zn is 0.218% by mass o
tia_tia [17]

The mathematical expression for mass percent is given by:

Mass percent = \frac{mass of the compound}{molar mass of the compound}\times 100

Put the values,

0.218 percent of zinc = \frac{mass of zinc}{3.00 \times 10^{4} g/mol}\times 100

mass of zinc = 0.218 \times (3\times 100) g

= 0.654 \times 100 g or 65.4 g

Now, number of moles of zinc  =\frac{given mass in g}{molar mass of zinc}

= \frac{65.4 g}{65.38 g/mol}

= 1.00 mole

Number of atoms of zinc is calculated by the Avogadro number.

Now, according to mole concept

6.022\times 10^{23} molecules of enzyme consists of 6.022\times 10^{23} atoms of zinc

So, 1 molecule of enzyme contains  =\frac{6.022\times 10^{23}atoms of zinc}{6.022\times 10^{23} }

= 1 atom of zinc.

Hence, every carbonic anhydrase molecule consists of 1 atom of zinc.



5 0
3 years ago
Looking at the periodic table, which group consists of elements that will not form an acid when combine with hydrogen?
Rainbow [258]
Group 8 nonmetals; <span>He, Ne, Ar, Kr, Xe, and Rn</span>
3 0
2 years ago
Read 2 more answers
What type of ions have names ending in ide?
Anon25 [30]
The answer would be C.
7 0
3 years ago
3.5 cm in length x 3.2 in height x 0.3cm in with calculate the volume
Aleksandr [31]

Answer:

volume = area×breadth×height

Explanation:

answer is 3.36

7 0
3 years ago
Which is true about each element in a period or horizontal row of the periodic table?
ehidna [41]

The answer is B as going from left to right on the periodic table elements increase by 1 in valence electrons

Valence electrons : The electrons on the outermost shell

5 0
3 years ago
Other questions:
  • Which of these minerals and mineral resources is composed of the remains of ancient marine organisms
    6·2 answers
  • What is a manipulated variable
    15·1 answer
  • Calculate the number of grams of solid aluminium chloride that will form when a mixture containing 0.150 g of aluminum powder an
    10·1 answer
  • How does the Coriolis effect benefit people who travel by airplane?
    5·1 answer
  • How can you tell that a compound contains an ionic bond
    6·1 answer
  • A chemistry student needs 50.0 g of methyl acetate for an experiment. By consulting the CRC Handbook of Chemistry and Physics, t
    11·1 answer
  • Which of the following methods estimates geologic events by comparing the objects to the layer of Earth they were discovered in?
    6·2 answers
  • Tell whether the statement is TRUE or FALSE. This symbol means every element is in both sets (A ⊆ B).
    5·1 answer
  • When NADH donates two electrons to ubiquinone during respiration, ubiquinone isa. reduced.b. oxidized.c. phosphorylated.d. aerob
    5·1 answer
  • How many moles of gold are Cleveland to 1.204×1024 atoms
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!