目前已知的化学元素有多少种？

化学元素是构成物质的基本组成单元。它们以周期表的形式展现出来，其中包含了所有已知的化学元素。截至目前，已经发现了118种化学元素，但其中是否还有未被发现的元素仍然是一个谜团。

随着科学技术的不断发展，人们对于元素的研究也在不断深入。最早被发现的元素是金、银和铜等贵金属元素，它们在古代就被人们广泛应用于制造首饰和其他珍贵物品中。而其他元素的发现，则随着科学家们对自然界元素分布的探索逐渐展开。

随着时间的推移，科学家们开始通过实验和观察来发现新的元素。英国化学家亨利·卡文迪许在1808年提出了现代周期表的雏形，他将元素按照其原子量进行归类。此后，其他科学家不断做出贡献，使得周期表逐渐完善起来。

至今为止，周期表上显示的元素有118种。这些元素按照原子序数的顺序排列，从氢（H，原子序数1）到奥格内森（Og，原子序数118）。这些元素的发现与命名往往源自对自然界和实验室中的化学现象的观察和研究。例如，氢和氧元素来源于水，铁元素是大自然中最常见的金属之一。有些元素的发现则依赖于大型实验设备，如加速器和核反应堆。

虽然已知的化学元素数量不断增加，但是人们一直在努力寻找新的元素。科学家们通过模拟和预测新元素的性质来指导实验，并使用合成方法来试图创造出新的元素。这个过程极其复杂和困难，因为新元素的稳定性和属性无法预测。目前，人们仍然对于周期表中尚未填满的空缺感到好奇，并且对于可能存在的未知元素保持着极大的兴趣。

总结起来，截至目前已知的化学元素有118种。这些元素的发现和研究深深地影响着我们对于物质世界的理解，也推动了科技的发展。然而，在科学的道路上，人们对于未知的探索永无止境。因此，我们可以期待未来的科学家们继续突破现有的边界，揭示更多秘密，并不断扩展我们对于化学元素的认识。

How many known chemical elements are there at present?

Chemical elements are the basic building blocks of matter. They are presented in the form of the periodic table, which contains all the known chemical elements. As of now, 118 chemical elements have been discovered, but whether there are still undiscovered elements remains a mystery.

With the continuous development of science and technology, research on elements is also deepening. The earliest discovered elements were precious metals such as gold, silver, and copper, which were widely used in the manufacture of jewelry and other precious items in ancient times. The discovery of other elements began with the exploration of their distribution in nature by scientists.

Over time, scientists began to discover new elements through experiments and observations. English chemist Henry Cavendish proposed the embryonic form of the modern periodic table in 1808, classifying elements according to their atomic weight. Since then, other scientists have made contributions to gradually perfecting the periodic table.

So far, there are 118 elements displayed on the periodic table. These elements are arranged in order of atomic number, from hydrogen (H, atomic number 1) to oganesson (Og, atomic number 118). The discovery and naming of these elements often originate from the observation and study of chemical phenomena in nature and laboratories. For example, the hydrogen and oxygen elements come from water, and iron is one of the most common metals in nature. The discovery of some elements relies on large experimental devices such as accelerators and nuclear reactors.

Although the number of known chemical elements continues to increase, scientists are still actively searching for new elements. They guide experiments by simulating and predicting the properties of new elements and attempt to create new elements using synthesis methods. This process is extremely complex and challenging because the stability and properties of new elements cannot be predicted. Currently, there are still empty spaces in the periodic table, and unknown elements are of great interest to scientists.

In summary, as of now, there are 118 known chemical elements. The discovery and research of these elements profoundly influence our understanding of the material world and drive technological development. However, in the path of science, the exploration of the unknown is endless. Therefore, we can expect future scientists to continue breaking through existing boundaries, revealing more secrets, and expanding our knowledge of chemical elements.