Abstract Random structure plays an important role in the composition of compounds, and topological index is an important index to measure indirectly the properties of compounds. The Zagreb indices and its revised versions (or redefined versions) are frequently used chemical topological indices, which provide the theoretical basis for the determination of various physical-chemical properties of compounds. This article uses the tricks of probability theory to determine the reduced second Zagreb index and hyper-Zagreb index of two kinds of vital random graphs: G ( n , p ) and G ( n , m ).

Siman Li

Li Shi

Wei Gao

Main Group Metal Chemistry

该期刊致力于发表主族金属和半金属化学领域的短文、原创研究和评论文章，主族金属化学是一本开放获取、同行评议的期刊，持续出版。欢迎发表关于无机、配位和有机金属主族金属和半金属化合物（包括锌、镉和汞）的理论、光谱、机械和合成方面的论文。该杂志还发表与这些金属的环境方面、它们的毒理学、释放途径和命运有关的研究。也接受有关主族金属化学应用的文章，包括在高分子化学、农业、电子和催化领域的应用。

The journal "Main Group Metal Chemistry" focuses on the field of main group metal and metalloid chemistry, publishing short communications, original research, and review articles. It is an open-access, peer-reviewed journal that is published continuously. We welcome submissions related to the theory, spectroscopy, mechanics, and synthesis of inorganic, coordination, and organometallic main group metals and metalloids, including zinc, cadmium, and mercury. The journal also publishes research concerning the environmental aspects of these metals, their toxicology, release pathways, and fate. Additionally, we accept articles on the applications of main group metal chemistry in fields such as polymer chemistry, agriculture, electronics, and catalysis.

《Main Group Metal Chemistry》期刊专注于主族金属和半金属化学领域，发表短文、原创研究和评论文章。该期刊为开放获取、同行评议的期刊，持续出版。欢迎投稿涉及无机、配位和有机金属主族金属及半金属化合物（如锌、镉和汞）的理论、光谱、机械和合成研究。期刊还发表与这些金属的环境影响、毒理学、释放途径及其命运相关的研究。此外，我们也欢迎关于主族金属化学在高分子化学、农业、电子和催化等领域应用的文章。

Category	Quartile
化学	3
化学, 无机化学与核化学	3
化学, 有机化学	3

Two modified Zagreb indices for random structures

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Journal Info

Category	Quartile
CHEMISTRY, ORGANIC	3