Question

hey guys solve these ​

Answer 1

Answer:

i know 2 and3

Explanation:

2. the amount of energy teleased when electron is added to an isolated gaseous atom

3.modern periodic law states that physical and chemical properties of an element is the periodic function of their atomic number

Answer 2

▪︎Periodicity refers to trends or recurring variations in element properties with increasing atomic number. Periodicity is caused by regular and predictable variations in element atomic structure. ... Elements within a group (column) display similar characteristics.

▪︎The electron affinity of an atom or molecule is defined as the amount of energy released when an electron is attached to a neutral atom or molecule in the gaseous state to form a negative ion

▪︎The modern periodic law states that the properties of the elements are a periodic function of their atomic numbers. ... There are 18 groups and 7 periods in the modern periodic table. s-block - the highest energy electron fills the s orbital. p-block - the highest energy electron fills the p orbital.

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