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
zvonat [6]
3 years ago
7

the elements fluorine,chlorine,bromine,and iodine are all found in the same group on the table. these elements are grouped toget

her because they​

Chemistry
2 answers:
madreJ [45]3 years ago
8 0

Answer:

Fluorine, chlorine, bromine and iodine are grouped together because they have the same number of valence electrons.

Explanation:

Fluorine, chlorine, bromine and iodine are all found in group 7, which is the second-last column from the right. Group 7 elements are also called the "Halogens" family.

The group number also tells you the number of valence electrons that the elements have in that group. Valence electrons mean the outermost electrons (See picture).

For example, fluorine has two shells (the circles with dots on them). The outermost electrons, or valence electrons, are the dots on the biggest circle. There are 7 dots, so there are 7 valence electrons, which corresponds with Group "7".

A full shell (except the for first shell) is when there are 8 dots. Since 7 is so close to 8, Halogens are very reactive.

Fluorine, chlorine, bromine and iodine all have 7 valence electrons and are in the Halogens family, which are very reactive.

RideAnS [48]3 years ago
8 0

Answer: Have the same valence electrons

Explanation: These elements are found in group 7 which indicates the number of valence electrons in their outermost shell.

You might be interested in
1. An object was carefully weighed on three different balances. Each balance was zeroed
Hoochie [10]

Answer:

10.335

Explanation:

An object was carefully weighed on three different balances

Each of these balances were zeroed before weighing

The masses that were weighed are as follows

10.35 g , 10.355 g, 10.30 g

Therefore the average value of these measurements can be calculated as follows

The total number of mass is 3

= 10.30 + 10.355 + 10.30/3

= 31,005/3

= 10.335

Hence the average value of these measurements is 10.335

7 0
3 years ago
Explain why we use 1/12 in finding atomic mass unit ?​
Nat2105 [25]

Answer:

The u (amu is the old unit name) is 1/12 of the weight of an 12C atom. The way the u is chosen ensures that all core and atom masses are multiples of 1(±0.1) u.

Explanation:

Further explanation if needed...

Carbon 12 was chosen because the chemical atomic weights based on C12 are almost identical to the chemical atomic weights based on the natural mix of oxygen. Simply because the atomic mass is defined as 1/12 of the mass of 12C. Others isotopes of carbon (13C mostly, with an abundance of 1.1% approximately) account for an average atomic mass slightly above 12.

7 0
3 years ago
What is the value of R in the ideal gas law?
dybincka [34]
It’s option B 0.0821L.atm/mol.K
5 0
3 years ago
What happens to the heat energy that leaves the milk?
bekas [8.4K]

Answer:

it gets cold or warm

Explanation:

pleas get me 53 likes

8 0
3 years ago
This is a type of element or substance that is not a metal.
Aloiza [94]
Non-metal elements are Noble gases,Halogens,nonmetals,semimetals(metalloids). ( and maybe other metals)
3 0
3 years ago
Other questions:
  • What are the spectator ions in Mg(s) + Zn2+ + 2NO3 → Mg2+ + 2NO3 + Zn(s)?
    7·1 answer
  • How many grams of a 31.6% potassium sulfate solution would contain 617 g potassium sulfate?
    13·1 answer
  • Write the chemical equation for the equilibrium that corresponds to Ka. Write the chemical equation for the equilibrium that cor
    11·1 answer
  • Any one know the answer?
    13·1 answer
  • At what temperature does uranium hexafluoride have a density of 0.5820 g/L at 0.5073 atm?
    6·1 answer
  • How many moles of aluminum are in 4.35 moles of al2si4o10(OH)2
    7·1 answer
  • What is one source for the variation that drives natural selection?
    11·2 answers
  • D c a b yfyefegyfyrgfyeerg
    15·1 answer
  • When Acid is added to the buffer, base within the buffer reacts with added
    12·1 answer
  • A car traveled 1500 km from Dallas to Shreveport in 4 hours. What is its average speed?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!