Which two elements are in the same period?

Which two elements are in the same period?

Elements that are in the same period have chemical properties that are not all that similar. Consider the first two members of period 3: sodium (Na) and magnesium (Mg). In reactions, they both tend to lose electrons (after all, they are metals), but sodium loses one electron, while magnesium loses two.

How do you group objects up into one object?

Press and hold CTRL while you click the shapes, pictures, or other objects to group. You will need to select more than one shape, picture or object in order to enable the Group button. You can select all the objects on a slide by pressing CTRL+A. Select the Arrange button and choose Group.

Why can’t I align picture in Word?

Hold down Shift and use the mouse or touchpad to select the objects that you want to align. Select Shape Format or Picture Format. Select Align. If you don’t see Align on the Shape Format tab, select Arrange, and then choose Align.

How do you group things together?

Grouping objects

  1. Hold the Shift (or Ctrl) key and click the objects you want to group.
  2. Click the Group command on the Format tab, then select Group.
  3. The selected objects will now be grouped. There will be a single box with sizing handles around the entire group so you can move or resize all of the objects at the same time.

What’s the period Number?


How do I lock a picture in Word so it doesn’t move?

How Do I Lock a Photo in a Word Document So It Doesn’t Move?

  1. Step 1: Print Layout Settings. Click the “View” tab on the main menu ribbon and then select the “Print Layout” button in the Views tool group.
  2. Step 2: Layout and Position. Click to select the image on the page.
  3. Step 3: Wrapping Text.
  4. Step 4: Fix the Position.
  5. Step 5: Test the Lock.
  6. Step 6: Drag the Anchor.

What elements have the smallest radius?

Helium has the smallest atomic radius. This is due to trends in the periodic table, and the effective nuclear charge that holds the valence electrons close to the nucleus. Atomic radius decreases as you move across a period from left to right and decreases as you move up a group from bottom to top.

Which elements are in the same family?


  • Families all have the same number of electrons in the outer energy level.
  • Periods are arranged in rows by size – from smallest atom to largest atom.
  • Lithium, Hydrogen, Sodium, or Oxygen, Sulfur, Selenium They are all in the same column.

What is another name for the groups?

What is another word for group?

batch bunch
boodle party
crowd gathering
consort throng
flock swarm

Why does Period 1 only have 2 elements?

There are only two elements in the first period: hydrogen and helium. Period 1 elements follows the duet rule, they only need two electrons to complete their valence shell. These elements can only hold two electrons, both in the 1s orbital. Therefore, period 1 can have only two elements.

Why do elements in group 18 rarely react?

The noble gases are the chemical elements in group 18 of the periodic table. They are the most stable due to having the maximum number of valence electrons their outer shell can hold. Therefore, they rarely react with other elements since they are already stable.

How do you find the period Number?

If you are given with the atomic number of an element you can find it’s period number and group number. The period number is related to the number of electron occupied shells in the element and the period number is linked to its valence electrons.

Which period can you find helium?

Helium is the second element on the periodic table. It is located in period 1 and group 18 or 8A on the righthand side of the table. This group contains the noble gases, which are the most chemically inert elements on the periodic table. Each He atom has two protons and usually two neutrons and two electrons.

What is the difference between a family of elements in the same period?

The vertical columns on the periodic table are called groups or families because of their similar chemical behavior. All the members of a family of elements have the same number of valence electrons and similar chemical properties. The horizontal rows on the periodic table are called periods.

Why does the atomic radius tend to increase as you move down a group but decrease as you move across a period?

The atomic radius increases moving down a group. Once again protons are added moving down a group, but so are new energy shells of electrons. The new energy shells provide shielding, allowing the valence electrons to experience only a minimal amount of the protons’ positive charge.

How many groups are there?


Why do groups have similar properties?

Elements in the same group have similar properties because they have the same number of valence electrons in their outermost shell. Elements in the same period have different properties because the number of valence electrons in their outermost shells differ.

Why do elements in the same family have the same properties?

Why do elements in the same family generally have similar properties? Elements in the same family have similar properties because they have the same number of valence electrons. So the nucleus has less of a effect on it’s electrons thus increasing the size of the atomic radius.

What is the name of group 2?

Alkaline Earth Metals

Does the atomic radius increase from left to right?

Atomic radius is determined as the distance between the nuclei of two identical atoms bonded together. The atomic radius of atoms generally decreases from left to right across a period. The atomic radius of atoms generally increases from top to bottom within a group.

What does it mean when elements are in the same family?

Element families are elements that have the same number of valence electrons. Most element families are a single column of the periodic table, although the transition elements consist of several columns, plus the elements located below the main body of the table.

How do I distribute pictures evenly in Word?

To distribute objects evenly: Hold the Shift (or Ctrl) key and click the objects you want to align. The Format tab will appear. On the Format tab, click the Align command and select Distribute Horizontally or Distribute Vertically from the drop-down menu that appears. The objects will distribute evenly.

What is the name of the family in Group 17?


How do I align images side by side in Word?

Click and drag down the top-right corner of each image until both images will fit side by side on the page. Word will not allow them to align next to each other if they are too big for the page unless you chose either the “Behind Text” or “In Front of Text” option.

What is Period 3 on the periodic table?

The third period contains eight elements: sodium, magnesium, aluminium, silicon, phosphorus, sulfur, chlorine, and argon. All of the period 3 elements occur in nature and have at least one stable isotope.

What are period elements?

A period in the periodic table is a row of chemical elements. All elements in a row have the same number of electron shells. Each next element in a period has one more proton and is less metallic than its predecessor.