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
Citrus2011 [14]
2 years ago
14

List first thirty elements with their valences​

Chemistry
1 answer:
lbvjy [14]2 years ago
5 0

Element   Atomic Number Valency

Valency of Hydrogen 1 1

Valency of Helium 2 0

Valency of Lithium 3 1

Valency of Beryllium 4 2

Valency of Boron 5 3

Valency of Carbon 6 4

Valency of Nitrogen 7 3

Valency of Oxygen 8 2

Valency of Fluorine 9 1

Valency of Neon 10 0

Valency of Sodium (Na) 11 1

Valency of Magnesium (Mg) 12 2

Valency of Aluminium 13 3

Valency of Silicon 14 4

Valency of Phosphorus 15 3

Valency of Sulphur 16 2

Valency of Chlorine 17 1

Valency of Argon 18 0

Valency of Potassium (K) 19 1

Valency of Calcium 20 2

Valency of Scandium 21 3

Valency of Titanium 22 4

Valency of Vanadium 23 5,4

Valency of Chromium 24 2

Valency of Manganese 25 7, 4, 2

Valency of Iron (Fe) 26 2, 3

Valency of Cobalt 27 3, 2

Valency of Nickel 28 2

Valency of Copper (Cu) 29 2, 1

Valency of Zinc 30 2

You might be interested in
A patient needs 40.0 mg of antibiotic per kilogram of body weight each day. If the patient weighs 55 kilograms.
White raven [17]

2200 mg of antibiotic

Explanation:

Given that 40 mg of antibiotic/kg of the bodyweight is given.

If patient is 55 kg then  the dose of antibiotic will be

if 40/1000000 is done then we can get antibiotic in kg/kg of the weight

= 0.00004 kg of antibiotic per kg

0.00004*55 ( to know how much 55 kg person will require)

= 0.0022 kg

This 0.0022 value will be converted to mg

0.0022*10^6

= 2200 mg of antibiotic will be given to a 55kg patient.

4 0
3 years ago
Wh
sergey [27]

The correct option would be 3.

Only thermal energy changes


Hope this helps you

Brainliest would be appreciated

-AaronWiseIsBae

5 0
3 years ago
Read 2 more answers
002 (part 1 of 2) 10.0 points
BARSIC [14]

Answer:

4) 1.5 mol

Explanation:

Well, the equation is already balanced and the mole to mole ratio of reactants and products are all 1. So if the limiting reactant is HCl and you have 1.5 mol, you do the mole to mole ratio with NaCl and since it is 1 to 1, there'd be 1.5 mol of NaCl.

6 0
2 years ago
Malia was able to make a paperclip float on the surface of water. What will most likely happen to the paperclip if a drop of dis
Arturiano [62]

Answer:

Its A

Explanation:

I just took the test

5 0
3 years ago
As two objects that are oppositely charged are brought together which will happen
BaLLatris [955]
Opposites attract, like for example magnets, one is positive and the other is negatively charged, they will attract
5 0
3 years ago
Other questions:
  • The normal boiling point of acetic acid is 118.1°C. If a sample of the acetic acid is at 125.2°C, predict the signs of ΔH, ΔS, a
    12·1 answer
  • How many oxygen atoms are present in 2.5 mol
    12·1 answer
  • Is a small whole number that appears in front of a formula in a chemical equation?
    15·1 answer
  • What is the balanced chemical equation for cellular respiration?
    13·1 answer
  • Why is the right side
    9·1 answer
  • Multiple answers are allowed.
    14·2 answers
  • Fill in the blank
    9·1 answer
  • In photosynthesis, what are the two major reactions that take place?
    13·1 answer
  • Mention any three drawbacks of Mendeleev periodic table.​
    5·1 answer
  • How many calories of heat are required to raise the temperature of 225g of water from 10.5°C to 43.7°C
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!