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
Veronika [31]
3 years ago
5

An element that appears in the lower left corner of the periodic table is

Chemistry
1 answer:
Xelga [282]3 years ago
6 0
This problem is honestly, very easy. Just grab a periodic table and find the element in Group 1 and Period 7. But first, let's discuss how the elements are arranged systematically in a periodic table. There are a lot of scientists who contributed to it, but the most famous one is Dimitri Mendeleev. He arranged the elements according to their atomic number. The elements starts from 1 which is Hydrogen up to the heaviest known elements which is Oganesson with an atomic number of 118. As you can observe, there is a gap between groups 3 and 4. This is done so that the periodic table does not take too much space horizontally. Thus, they are just placed at the bottom. These elements are called lanthanides (upper row) and actinides (lower row). The rows in the periodic table are called groups, and the columns are called periods.

Now, the element at the lower left corner (Group 1, Period 7) is Francium, abbreviated as Fr. It has an atomic number of 87. Some elements are actually synthesized, but Francium is a naturally occurring radioactive element. It was discovered by Marguerite Perey in France.

You might be interested in
Which kind of nuclear decay does not alter the identity of the atom?
alukav5142 [94]
Hmmmmmm, Gamma Radiation 
4 0
3 years ago
Read 2 more answers
NEEED HELP PLEASE IM VERY STRESSED
Arte-miy333 [17]

Answer:

C) It moves faster and collects more data

Explanation:

5 0
2 years ago
On a cold, winter day, Sheena rubs her hands together to warm them up. How could Sheena actions be used to explain the Law of Co
rosijanka [135]

Answer:

When she rubs her hands together, it causes heat or friction

5 0
3 years ago
!PLEASE HELP! !URGENT! 25 POINTS
Varvara68 [4.7K]
B! because the hydrogen causes some nuclear reactions.
5 0
3 years ago
Read 2 more answers
Bases turn litmus paper what color?<br><br> a) red<br> b) blue<br> c) yellow<br> d) pink
yKpoI14uk [10]
Answer:
blue
.......
.......
5 0
3 years ago
Read 2 more answers
Other questions:
  • What is the arrangement of water in the gaseous liquid and solid states
    7·1 answer
  • A 2.026g sample of a hydrate of sodium carbonate (Na2CO3) is heated to remove water. After heating, the mass of the sample is 0.
    13·2 answers
  • Most minerals on Earth's surface contain which of the following​
    5·1 answer
  • How do I proceed to do this? I’m very confused.
    7·1 answer
  • What element has the lowest melting point
    12·1 answer
  • Deploying an airbag in an automobile is a complex process. Identify at least three steps in the process. Refer to your research
    11·1 answer
  • An enzyme acts to Group of answer choices raise the activation energy needed to start the reaction. lower the activation energy
    12·1 answer
  • What trend in atomic radius occurs down a group on the periodic table? What causes the trend?
    7·1 answer
  • Can someone help me with thins, im to lazy to read rn i did freaking 47 over due homeworkkkk
    14·1 answer
  • A microwave oven emits radiation at a wavelength of 0.500 cm. What is the frequency of this radiation?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!