Group 1 Elements

Atom T has a proton number of 11 and a nucleon number of 23. Which of the following is true about element T?

• It does not conduct electricity

• If forms an oxide with the formula TO

• It is a hard black solid

• It reacts with water to form an alkaline solution

Table shows the relative atomic masses of two elements, H and J. Element H and J are located in Group 1 of the Periodic Table. Which statements is true about elements H and J?

• H is more electropositive than J

• The melting point of J is higher than that of H

• The number of valence electrons in atom J is more than that of atom H

• J reacts with cold water more vigorously than H

Which statements is correct about the alkali metals when going down Group 1 in the Periodic Table?

• The reactivity decreases

• Strength of nucleus to attract an electron into the valence shell increases

• Electropositivity decreases

• The single valence electron becomes more weakly pulled by the nucleus

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

The following shows some information about element M.

1) element M forms ions with the formula M⁺

2) An M⁺ ion has an electron arrangement of 2.8

Element M will?

• reacts with red-hot iron to form a brown solid

• displaces hydrogen gas from cold water

• forms an acidic oxide

• cannot conduct electricity

Group 1 elements are also known as

• Noble gas

• Halogen

• Alkaline earth metals

• Alkali metals

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Arrange the elements in group 1 from the top to bottom of the group.

• Li, Na, K, Fr, Rb, Cs

• Li, Na, K, Rb, Fr, Cs

• Li, Na, K, Rb, Cs, Fr

• Fr, Cs, Rb, K, Na, Li

Group 1 elements only form ….. Ion

• 1+

• 1-

• 2+

• 2-

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What gas is given off when group 1 elements reacts with water?

• Hydrogen

• Oxygen

• Carbon dioxide

• Helium

Tags

NGSS.MS-PS1-2

When a group 1 element reacts with water, a hydroxide is formed. What colour would Universal Indicator turn in this solution?

• Green

• Blue

• Yellow

• Red

Tags

NGSS.MS-PS1-2

How many electrons are in the outer shell of group 1 elements?

• 0

• 1

• 2

• 3