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
ahrayia [7]
3 years ago
11

What radioactive element has the lowest atomic number

Chemistry
2 answers:
Elina [12.6K]3 years ago
8 0

Technetium, with atomic number (denoted Z) 43, is the lowest-numbered element in the periodic table of which all isotopes are radioactive. The second-lightest exclusively radioactive element, promethium, has an atomic number of 61.

Alex777 [14]3 years ago
6 0

Technetium, with atomic number (denoted Z) 43, is the lowest-numbered element in the periodic table of which all isotopes are radioactive. The second-lightest exclusively radioactive element, promethium, has an atomic number of 61.

You might be interested in
Calculate the amount of heat released when 27.0 g H2O is cooled from a liquid at 314 K to a solid at 263 K. The melting point of
lubasha [3.4K]
Cool liquid from 314 K to 273 K, freeze liquid at 273 K, and cool solid to 263 K.
5 0
3 years ago
Read 2 more answers
Identify the term that matches each definition.
Nikolay [14]

Answer:

a. Volatile.

b. Air foil.

c. Sash.

d. Work surface.

Explanation:

In science, matter can be defined as anything that has mass and occupies space. Any physical object that is found on earth is typically composed of matter. Matter are known to be made up of atoms and as a result has the property of existing in states.

Generally, matter exists in three (3) distinct or classical phases and these are;

I. Solid.

II. Liquid.

III. Gas.

Matching the terms with their respective definition, we have;

a. Volatile: A characteristic that describes substances that evaporate readily, producing large amounts of vapors.

b. Air foil: the front vent of a fume hood, which helps maintain proper air circulation.

c. Sash: the glass panel in front of the fume hood that shields the user from fumes and other hazards.

d. Work surface: the horizontal, flat area of a fume hood upon which experiments are carried out.

7 0
3 years ago
How can water dissovle many substances
11111nata11111 [884]

Answer: Polar molecules

Explanation: Water is able to dissolve many substances because of its polar molecules, The positive and negative ends of a water molecule attracts the molecules of other polar substances..

I'm pretty sure, idk college stuff

3 0
3 years ago
Read 2 more answers
The total number of oxygen atoms indicated by formula Cu3(PO4)2?
ASHA 777 [7]

Answer:

There's a total of 8 oxygen atoms in the formula Cu3(PO4)2

6 0
3 years ago
The pressure of a gas increases when the temperature _ at constant volume
weqwewe [10]
When it’s warmer so when temperature encreases
7 0
3 years ago
Other questions:
  • in the reaction 2h2 + 02 h2o what coefficient should be placed in front of h20 to balance the reaction
    7·1 answer
  • What is the empirical and molecular formula of caffeine
    12·1 answer
  • Calculate the number of moles of Cl atoms in 3.01×1024 formula units of magnesium chloride, MgCl2.
    12·2 answers
  • Why is the formation of a ternary compound also a synthesis reaction?
    12·2 answers
  • I need help! <br> I don't understand..
    10·1 answer
  • 3
    7·1 answer
  • Select all the correct answers.
    7·1 answer
  • An isotope contains 47 protons, 47 electrons, and 60 neutrons. What is the identity of the isotope?
    13·2 answers
  • Q1: Erosion and weathering are often confused. How is erosion different from weathering? Give an example of each.
    6·1 answer
  • What product or ratio of properties remains constant (PxT, TxV, P/V, V/T, etx)?When you have decided, label the "constant?" colu
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!