Question

Which of the following property will be common

in group 1 elements?

a. Mass number c. number of protons in nucleus

b. Atomic number d. number of valence electrons


please give me the answer fqst​

Answer 1

Explanation:

I THINK NUMBER OF VALENCE ELECTRONS

MARK ME AS BRAINLIEST!!

Answer 2

Answer: The answer to this question is-

Number of valence electrons will be common for group 1 elements because for main group elements, the number of valence electrons is always same for every element in the group. It is basic property of a periodic table, researchers and scientists discovered it years ago. Periodic table is arranged in such a way that all the elements with similar properties are kept in the same group.

Explanation:

The General physical properties of Group 1 elements are:

• Group 1 elements are also known as Alkali metals , they are grey solids with shiny silvery surfaces when it is freshly cut.

• surface of alkali metals turn dull when exposed to air.

• This is because alkali metals are very reactive. They react frequently with oxygen and water vapour in the air when exposed.

• Alkali metals are soft in nature , hence it can be cut very easily.

• The important of alkali metals is that it has low density than heavy metals such as iron and copper.

• Alkali metals are good conductors of heat and electricity.

• They have low melting and high boiling points.

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